The doomsday preppers should be lining up for this cool gadget. Not only is it a portable stove that can burn just about anything from sticks to pine cones, it converts the heat into electricity. While boiling water for tea/coffeee you can plug a USB gadget in for charging.
By far, the BioLite CampStove is one of the best gadgets for your bug out bag as it allows you to create power just about anywhere. Video of the BioLite CampStove after the break.