Go Amish with the Hand-Crank USB Power Charger

You've been babied by power outlets for far too long — if you want charged gadgets, then put a little elbow grease into it! The Hand-Crank USB Power Charger will work on most phones (and the rest, with adapters), cameras… anything with a USB port, really. It may just be your best friend on the road, where outlets are nowhere to be found, or sitting in an airport when you need some extra juice in a pinch.

It's compact, lightweight and costs $40. Best of all: It doesn't draw power from the grid, so it's one way to go green (and build up those muscles).

Via National Geographic Online Store