One for the gadgetheads

A backpacking cookstove that runs a tiny generator so you can charge your USB devices in the wild. Because what's the point of eating, of continuing to live, if your phone and GoPro are dead, right?

Actually, the idea of a simple, compact, fire-to-electricity generator is pretty cool and it probably has more uses out there that are less hip and more fundamental, like powering lights or well pumps in third world countries.