One of my friends makes fanless backpacking woodstoves out of nested soup cans. They’re basically like a Bushbuddy, only not so big, heavy and indestructible. The relationship between the sizes of the various parts causes them to convect increasingly greater amounts of air through the fuel as the heat increases. If you keep shoving sticks in you get to the point that you would swear there was a fan under there… but the water’s already boiled by then anyway.
Pair one of Pedro’s ratty-looking but functional stoves with a Powerpot and you can charge batteries with your stove instead of draining them!
