$40 Rocket Stove demo:
http://www.tacticalintelligence.net/blog/rocket-stove.htm
... stove uses very, very little in the way of twigs and small sticks.
Thanks for the link, amazing what can be done with a few twigs.
Years ago, a friend wanted a large parcel of ground and was willing to live under a tree if she could get one.
Sheila managed to find a wooden packing crate, just large enough for a camp cot and a tiny wood stove that a friend made for her out of cast iron scraps.
It was almost a square cube, about 12 inches , with a flat top.
A few twigs, and she was warm and could do a little cooking too.
LOL, behind it she hid her old bathtub, so she could have a bath and did laundry, washed the dog in it .......
She no longer washed the dog, after the day she crawled and put the dog in for her bath, naked, and never expecting to have a low flying helicopter check her out............
She loved her mountain top and it was beautiful, adjoined a State Park in Southern California, so she could go for hikes too.