Here is an old and new project. In central america people use plow discs as cooking pots like a wok. It is called discada. All you need is a disc ( mine is 18" john deer) and a piece of metal to weld the center hole. Then you season it like cast iron. Because there are heat treated to last it gives them a good heat distribution accross the surface.
The rocket stove is second generation and a close knock off of a deadwood. This one is about 10 pounds. We cooked our fish this weekend on them. Willow twigs did the job in no time.uploadfromtaptalk1367264088647.jpg