Grand Award winner, Popular Science: Biolite CampStove, weighs 33 ounces, wood burner to cook meals and has a thermoelectric generator. some current powers a fan for efficient burning the other current is available for charging batteries, cell phones thru USB port.
I have one, used it on the Main last October to charge gps and ipod, while heating up shower water. Worked great, I love the technology. Might be a little steep in the price, but I am a sucker for cool gadgets.