I am brainstorming a bit much today, I know, but I remembered the DOD was looking into micro-turbines for producing electricity in the field, and I had another bright idea…

A small water container (pressure chamber) with a pipe leading up, and a steam-turbine through which the vaporised water is lead, and a transformer to give controllable current. You heat it with anything that burns, and you put any liquid in it.

Does anyone make this?