Arduino means "strong friend" in Italian, and it really is. Nearly anything you can imagine, Arduino can help you make, from a light-up dance floor, to a chess-playing robot, to a programmable LED cube.
Converting heat from the fire into usable electricity, these clever stoves will recharge your phones, lights and other gadgets while you cook dinner. Unlike solar, BioLite CampStove is a true on-demand source http://www.biolitestove.com/campstove/camp-overview/features/
Convert a battery powered drill into a hand crank battery charger (without harming the drill)