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5 Terracotta Coolers That Look Like Sculptures and Work Without Power

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Traditional cooling methods are gaining fresh attention as homeowners and designers search for environmentally responsible alternatives to energy-intensive air conditioning. Among these, clay coolers have emerged as a practical and elegant solution rooted in centuries-old craftsmanship. Their ability to cool naturally without relying on electricity aligns perfectly with the growing demand for sustainable living and climate-responsive design.

Today, architects are integrating these timeless cooling systems into modern homes. By combining natural materials, passive cooling principles, and thoughtful aesthetics, clay coolers are rediscovering solutions that have stood the test of time.

1. The Timeless Science Behind Clay Cooling

Clay coolers function through the principle of evaporative cooling, one of the oldest and most effective natural cooling techniques. The porous clay absorbs water, and as the moisture gradually evaporates, it draws heat from the surrounding air, lowering the temperature without consuming electricity. This process creates a gentle cooling effect that feels comfortable. Unlike conventional air conditioners that depend on compressors and refrigerants, clay coolers work in harmony with natural environmental conditions.

Their simple engineering offer an energy-efficient solution that remains highly relevant for contemporary architecture.

MALU is a thoughtfully designed personal cooling system that transforms the ancient principle of evaporative cooling into a contemporary home product. Created by Austrian designer Katja Posch, the compact cooler features a porous terracotta cylinder supported by a handcrafted wooden frame and topped with a circular wooden water tray. Measuring 700 millimetres tall and 280 millimetres wide, MALU is designed to function as both a cooling device and a sculptural furniture piece. Its minimalist form, warm earthy materials, and refined craftsmanship allow it to blend seamlessly into modern interiors while offering an environmentally conscious alternative to conventional cooling appliances.

Water poured into the wooden tray gradually filters through the 8-millimetre-thick terracotta body, where natural evaporation cools the surrounding air before it is released through slim horizontal vents. An optional low-energy fan housed within the wooden base enhances airflow, while the cooler remains effective even in passive mode. Constructed from repairable, recyclable terracotta and wood, MALU is designed for durability and long-term use.

2. A Sustainable Alternative to Energy-Intensive Cooling

As global temperatures continue to rise, reducing energy consumption has become a priority for both homeowners and the construction industry. Clay coolers provide an environmentally friendly alternative by eliminating the need for electricity during operation and minimizing carbon emissions. Crafted from natural clay, they are biodegradable, locally sourced, and require significantly less energy to manufacture than conventional cooling appliances.

Their production also supports traditional pottery communities, preserving valuable artisanal skills while encouraging sustainable local economies. By choosing clay coolers, homeowners reduce their environmental footprint with a cooling solution that balances ecological responsibility with everyday comfort and long-term sustainability.

Designed by Simon Pavy in collaboration with the global design agency Entreautre, the low-tech terracotta cooler offers a sustainable alternative to conventional air conditioning by combining traditional cooling methods with advanced fabrication techniques. The product is built around a porous terracotta vessel filled with water, using the natural process of evaporative cooling to lower surrounding air temperatures. Inspired by centuries-old cooling practices from the Middle East, India, and Egypt, the cooler channels warm air through precisely designed openings, where contact with the moist terracotta surface naturally cools the airflow. Its elegant geometric form improves cooling efficiency through carefully engineered airflow dynamics.

To maximize performance, the designers employed ceramic 3D printing to create complex, organic forms that increase the interaction between air and the wet terracotta surface. Developed using Grasshopper and Rhino 3D, the parametric design allowed precise control over thickness, porosity, and airflow for optimal cooling. The prototype was produced using a specialized terracotta 3D printer created by Dutch artist Olivier van Herpt, enabling intricate ceramic fabrication impossible through conventional methods

3. Modern Designs for Contemporary Interiors

Modern interpretations of clay coolers extend far beyond their traditional appearance, making them suitable for today’s refined interiors. Designers are experimenting with sculptural forms, textured finishes, earthy colors, and modular designs that complement contemporary architectural styles. Instead of hiding these cooling systems, homeowners display them as functional art pieces that celebrate craftsmanship and natural materials.

Whether placed in living rooms, courtyards, balconies, or open-plan homes, clay coolers contribute to a warm and organic design language. Their combination of beauty and performance reflects a growing appreciation for products that merge sustainability, cultural heritage, and sophisticated interior aesthetics.

Ant Studio’s Beehive, designed by architect Monish Kumar Siripurapu, is an innovative evaporative cooling system that reinterprets traditional earthen cooling methods for modern, energy-conscious environments. Developed in response to rising urban heat conditions, the system uses porous terracotta modules arranged in a honeycomb-inspired structure. Water is absorbed into the clay and slowly evaporates, naturally reducing surrounding air temperature without electricity or chemical refrigerants. Drawing from cooling practices used in ancient India, Egypt, and other hot climates, the Beehive merges cultural intelligence with contemporary architectural thinking.

Made entirely from terracotta, the Beehive is a zero-plastic, zero-emission system that also supports air purification through moisture-driven biofilm formation on its surface. The design is modular, repairable, and adaptable to different site conditions, making it suitable for factories and high-heat work environments.

4. Healthier Indoor Environments Through Natural Cooling

Beyond reducing energy consumption, clay coolers contribute to healthier indoor living conditions by providing gentle, naturally humidified cooling. Unlike conventional air conditioners that often dry indoor air and require chemical refrigerants, clay coolers maintain a more balanced indoor atmosphere through natural evaporation. This can create greater comfort in dry climates while reducing dependence on mechanically cooled environments.

Their quiet operation also minimizes noise pollution, promoting a calmer and more relaxing home environment. When combined with cross ventilation, shaded openings, and other passive design strategies, clay coolers help create interiors that prioritize environmental sustainability and occupant well-being.

Nature assigns a role to every organism, even those humans often dismiss as pests. Scavengers return waste to ecological cycles, while termites despite damaging human structures build complex mound systems that regulate airflow and maintain stable internal temperatures. This hidden intelligence in termite architecture inspired TerraMound, a cooling system designed by Rameshwari Jonnalagedda. By studying how these structures achieve passive ventilation, the project translates biological efficiency into a human-centered approach to sustainable cooling that responds intelligently to rising temperatures without excessive energy use.

TerraMound operates on two principles and that is maximizing surface area and enabling porosity. Its geometry replicates the internal networks of termite mounds, increasing air contact through a surface-area-to-volume ratio. Produced using clay-based 3D printing, it forms intricate porous structures impossible to handcraft. A water reservoir at the top releases moisture through terracotta, while a base fan draws air upward, intensifying evaporative cooling and creating a functional, sculptural biomimetic system.

5. The Future of Climate-Responsive Home Design

The renewed interest in clay coolers reflects a broader movement toward climate-responsive architecture that values passive design over energy-intensive systems. Architects are increasingly pairing clay cooling with courtyards, green roofs, thermal mass walls, rainwater harvesting, and natural ventilation to create homes that remain comfortable while consuming fewer resources. These integrated strategies show that sustainable architecture does not always require advanced technology, but often benefits from revisiting proven traditional practices.

As cities confront rising temperatures and environmental pressures, clay coolers represent a meaningful intersection of heritage, innovation, and ecological responsibility, offering a timeless solution for resilient modern homes.

The Nave Air Conditioning System is a low-tech cooling product that uses terracotta’s natural evaporative properties to regulate indoor temperatures without electricity or complex electronics. It is designed as a passive climate solution where water stored inside a porous clay structure gradually seeps through the walls and evaporates on the surface. This process absorbs heat from the surrounding air, helping cool both the material and the room. With zero emissions and no power requirement, Nave offers a sustainable alternative to conventional air conditioning systems, especially for hot climates and off-grid or low-energy spaces.

The product is available in floor-standing and wall-mounted modular forms, allowing flexible placement in homes and interiors. Once filled with water, it begins working immediately as the moisture moves through the terracotta body and evaporates naturally. Its porous structure and patterned grill design enhance airflow and surface cooling efficiency. Beyond functionality, it also acts as a sculptural interior element, integrating passive cooling technology into everyday living spaces.

As climate-conscious design continues to evolve, clay coolers bridge tradition and innovation with remarkable simplicity. They offer an elegant, low-impact approach to creating comfortable, energy-efficient, and environmentally responsible living spaces.

The post 5 Terracotta Coolers That Look Like Sculptures and Work Without Power first appeared on Yanko Design.

The Bento Box Built to End Takeout Waste for Good

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Every time I order food delivery, I already know what’s coming before I open the bag. A stack of plastic containers, lids that barely seal, and that guilty beat when I toss everything in the trash about five minutes after eating. It’s a ritual nobody talks about but everyone performs. It happens millions of times a day.

That’s the problem Kaja Brunke decided to sit with. The Polish designer, who earned her Master’s from the Academy of Fine Arts in Gdańsk, didn’t approach meal delivery packaging with the usual sustainability playbook. She didn’t swap the plastic for bamboo and call it done. She asked a harder question: what if the container was never meant to be thrown away at all?

Designer: Kaja Brunke

The result is ReBento, a returnable, reusable container system designed specifically for subscription meal delivery. It just won the Packaging category at the Green Product Award 2026, and once you understand what it’s actually doing, it’s hard to unsee how obvious the solution feels, and how long it took for someone to build it properly.

ReBento works like this: meals are delivered in durable, leak-proof containers. Inside, removable glass compartments let you separate and reheat food directly in the box, no transfer required. After you’re done, empty containers are collected by couriers on their next delivery run and cycled back into the system. No secondary logistics chain to build. No complicated drop-off points. It integrates into the delivery infrastructure that already exists.

That last part is what makes it genuinely clever. Most sustainable packaging concepts are designed in isolation, as if the supply chain is a blank canvas waiting to be reimagined. ReBento was designed around the reality that already exists. Brunke clearly understood that a solution only works if it doesn’t require the whole system to change around it. Couriers are already going door to door. Why not have them pick something up on the way back?

The glass compartments are a thoughtful detail that deserves more attention than they might initially get. Glass is heavy, yes, but it’s also the reason the dining experience actually improves. Food doesn’t absorb the smell of the container. You can reheat without transferring to another dish. The meal arrives as it was meant to be eaten. For anyone who has peeled hot soup-soaked rice out of a soggy paper container, that alone is worth talking about.

What Brunke has built is not just a product. It’s a framework for how meal delivery could work if the industry decided to take the waste problem seriously, rather than paper over it. The sector has largely settled for greenwashing: compostable containers that require industrial composting facilities most cities don’t have, or “recyclable” plastic that rarely makes it through the actual recycling process. ReBento sidesteps the whole debate by making durability the point.

I’ll be honest: I’m a little impatient for something like this to reach the mainstream. Subscription meal delivery is one of the fastest-growing segments of the food industry, and the packaging waste it generates is staggering. The irony is that the subscription model is actually the ideal environment for a returnable container system. The logistics are already in place. The customer relationship is already ongoing. The pieces are all there.

Brunke came to design through an unusual path: advanced math and physics in high school, a year on exchange in Illinois, and a degree grounded in solution-based thinking. You can feel that background in ReBento. It’s not a conceptual piece that looks beautiful in a portfolio and stops there. It’s a system that has been thought through to the point of asking: how does this actually get picked up, cleaned, and sent back out again?

That’s the kind of design thinking that doesn’t always get the recognition it deserves, because it’s not flashy. A returnable bento box won’t stop traffic the way a concept car does. But the best design isn’t always the loudest. Sometimes it’s the kind that makes you wonder why it took this long.

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The Grocery Container That Finally Makes Reuse Actually Work

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Walk into any supermarket and you’ll notice that the food gets a lot of attention, but the packaging it comes in? Almost none. We’ve become so accustomed to grabbing a plastic-wrapped chicken breast or a shrink-sealed block of cheese and tossing the container without a second thought that it has essentially become invisible. Which is exactly why Lars Biedermann’s ReLoopBox caught my attention the moment I came across it.

ReLoopBox is a circular, reusable container system designed to replace the disposable plastic packaging that floods our grocery stores, refrigerators, and eventually, our landfills. On the surface, it sounds like a straightforward sustainability pitch. But the more you look at it, the more you realize that Biedermann, an industrial design graduate from FH Joanneum in Austria, wasn’t just designing a container. He was designing a completely different logic for how food packaging should work.

Designer: Lars Biedermann

The system uses standardized, vacuum-sealed containers made from copolyester, silicone, and stainless steel. These aren’t flimsy alternatives to plastic wrap. They’re built to be durable, reusable, and returnable, meant to circulate between consumers, manufacturers, and retailers rather than taking a one-way trip to the bin. Each container is embedded with a digital chip that tracks it through the supply chain, handling inventory and logistics with minimal friction. It’s the kind of detail that quietly separates a thoughtful design from a well-intentioned one.

The vacuum seal is also doing real work here, and it’s worth noting. One of the grimmer realities in food sustainability is that a significant portion of what we buy never actually gets eaten. Food goes bad too quickly, and a lot of that comes down to packaging that doesn’t do much beyond keeping things contained for the journey home. A vacuum environment slows spoilage significantly, which means ReLoopBox isn’t just arguing against plastic waste. It’s also quietly taking aim at food waste. That’s two problems addressed through one design decision, and I appreciate when a solution earns its own complexity.

Aesthetically, the design is clean and considered, which matters more than people give it credit for. Sustainable products have historically struggled with an image problem. They tend to look corrective rather than desirable, like they’re asking you to make a sacrifice. ReLoopBox doesn’t carry that energy. It looks like something that belongs in a well-designed kitchen, which is probably the smartest thing Biedermann could have done. If a product doesn’t look good, it doesn’t get adopted, and if it doesn’t get adopted, the environmental argument is moot.

My honest take is that the real challenge for a system like this isn’t the design itself, which is genuinely impressive. It’s behavioral. Getting consumers to return containers, getting retailers to build the infrastructure to accept them, getting manufacturers to commit to a circular model instead of a linear one, that’s a much bigger lift than any design brief can anticipate. We’ve seen well-designed reuse programs come and go because the return loop is where things tend to fall apart. Biedermann seems to understand this, which is why the digital chip integration is such a critical piece of the system. It removes guesswork from the tracking process and makes the logistics side of the loop far more manageable.

What makes ReLoopBox feel genuinely fresh isn’t that it proposes reuse. We’ve had reusable containers for decades. It’s that it proposes a reuse system, one that thinks about the full journey of a container rather than just the moment it sits on a shelf. Biedermann has described his practice as holistic design with a goal of contributing something positive to the world, and that philosophy is visible in every layer of this project.

Whether ReLoopBox eventually scales into something we see in mainstream retail remains an open question. But as a piece of design thinking, it’s the kind of proposal that makes you look at the grocery aisle a little differently, and realize that even the most mundane objects are still waiting to be redesigned.

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Recyclable stool made from potato scraps and sawdust can be used for firewood

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There are plenty of designs that advertise being sustainable, but many of them stop halfway through the product’s life cycle. They are usually made from sustainable or renewable materials, and some, but not all, are made with a reduced carbon footprint. That said, not many cover what happens after the product has served its purpose, which often means adding to the already enormous amount of waste we produce annually. Fortunately, there are some designs that do take that into account, creating a circular economy where the product or its materials can be used for other purposes. One example is this cork-like stool that, true to its wooden nature, can actually be used like firewood to heat up a space or, better yet, fuel workshops that will produce the materials to be used to create another stool.

Designer: Renaud Defrancesco

Wood is a much-loved material by designers and producers. It has an innate beauty and texture that’s hard to reproduce artificially, it is biodegradable, and, to some extent, also renewable. It takes time for trees to grow, however, and not all parts of the wooded material actually end up getting used. Many get left on the cutting room floor, either as small chunks or, worse, sawdust. The latter is easy to take for granted until they pile up and become pollutants themselves, at least until they dissolve and disintegrate over a long period of time.

Briket is a stool that tries to solve that material waste problem by giving a new purpose to waste byproducts not just from woodworking but also from the food industry. In a nutshell, this nine-legged stool is made from sawdust scraps as well as potato scraps, both biodegradable and environment-friendly materials we throw out by the ton every day. Creating the parts of the stool itself isn’t exactly hard either, as it mostly involves compressing these minute pieces until they become a rigid and solid mass. This, in theory, can be done anywhere there’s an abundance of wood waste, which practically means sawmills, carpentry shops, workshops, and other places that work with large quantities of wood.

What makes the Briket stool more interesting, however, is how it can be used for some unrelated purpose when it has reached its end of life. Inspired by wooden pellets used for bonfires and fire pits, it can serve as fuel to heat up a place or keep the fire of a workshop going, letting it serve people one last time before finally biting the dust, pun intended. In fact, the legs of the stool can be individually removed and replaced, making the piece of furniture almost immortal as long as there are replacement parts available.

In terms of aesthetics, Briket has a unique raw appearance and texture that is more similar to cork than wood, something that might not sit well with everyone’s tastes. Because of that, some people might even have doubts about its stability and reliability as furniture you will sit on. Fortunately, that doesn’t seem to be the case, and Briket stands as a shining example of a truly sustainable design from start to finish.

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Glucose monitor and insulin pump concept is a sustainable way to keep tabs on diabetes

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Of the many disorders that afflict people today, diabetes is perhaps the literally most painful one to monitor and maintain. Even with advancements in medical technology, pricking your finger is still the most accurate way to measure blood sugar levels. At the same time, taking in insulin often involves painful and tedious injections. And it isn’t just humans who are hurting from these, but the environment also suffers from all the waste these life-saving tools produce. It’s probably high time to have a glucose monitor and insulin delivery system that is not only painless and convenient but also sustainable, which is exactly what this minimalist-looking device concept is proposing.

Designer: Maxwell Stevens

CGMs or Continuous Glucose Monitors are one of the less invasive methods of keeping tabs on your blood sugar levels, though most do require inserting a sensor under the skin that is read by a device that sticks to your body over that site. When it comes to injecting insulin, on the other hand, insulin pumps remove the need to always pierce your skin for every injection, as a needle stays in its position for a day or two before needing to be replaced, unless the pump is one that actually stays on your body and above your skin. If these two devices sound almost related, it’s because they really are, and the Ingo CGM and insulin pump concept actually combines these two functions into a single, reusable, and sustainable device.

This oval-shaped device combines two critical functions in a single compact design that diabetes patients can discreetly wear on their bodies. Ingo can even have different colors to match skin tones so they won’t stand out as much as more obvious medical devices. There’s also the element of convenience as the device can be easily recharged on a wireless base, while the CGM sensor and pump needle are integrated into the sensor patches that stick over your skin.

Ingo also differs from existing CGMs and insulin pumps in the way that it tries to reduce the amount of waste as much as possible. Instead of disposable parts, it uses reusable components and recyclable patches, lessening the burden on the environment that these solutions often place on the planet. The rechargeable device and refillable insulin tank also prolong the life of the product or at least those parts that shouldn’t have to be thrown away frequently. Ingo is definitely an interesting proposal for a more humane and more environment-friendly way to keep diabetes patients living healthy and meaningful lives while also taking care of the planet they’re living on.

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