Never lose your USB flash drive when you have it pinned right to your clothing. The Bulavkus flash drive from Art Lebedev is essentially a giant safety pin with a flash drive head. Not only will you not lose your data (literally), you can easily access it because you store it OUTSIDE your clothing instead of inside your pockets or bag. See:

Ok, maybe it’s a little geeky to wear a flash drive like a badge of honor on your lapel but if you need to use one frequently it’s very handy. Pierced ears? Just got an idea. Plus in an emergency you can fix your clothing or poke someone’s eye out with the safety pin.

Bulavkus Safety Pin USB Drive from Art Lebedev