The idea is brilliantly simple: burn whatever you find in the woods—sticks, leaves, pinecones, whatever—and let the stove transform the heat into electricity you can use to charge via USB—and it should provide about the same output as your laptop. No bulky solar panels, no extra battery packs—though it will add an extra two pounds to your kit. And since it's a real fire and not some extra charging gadget, you can actually use it to boil water and cook with—and that's really why you're sitting out in the wood anyway, right?
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From the collection Survival-Camping, Hunting and Fishing: