K3 Powertube Portable USB Device Charger

These things are nifty. They look like a tube of mascera, but act as an emergency backup charger for your phone or whatever. Here's the real trick: Use them to recharge THEMSELVES, and you've got yourself a handy little perpetual motion machine. Take that, physics. 
K3 official site

Ends on March 14 at 9AM CT

About K3

You know K2, the second-tallest mountain the world? Well...oh, you didn't know thatt? Suppose it is a bit of an obscure piece of trivia. We weren't trying to insult your intelligence. 
K3 official site