It seems that just about everyone in the United States has owned a Slinky at one time or another. The mesmerizing toy has been around for decades and has entertained generations of young and the young at heart. The main problem with the Slinky was finding a staircase long enough to really be able to indulge in watching the metal spring "walk" its way downstairs. One company is seeking funding on Kickstarter to sell "A Never-Ending Slinky Machine" to keep those springs walking.