I used to (30+ years ago) make the heater in a 1lb coffee can and I burned lighter fluid in it. I then would place a 3 lb coffee can over the lighted 1 lb can. The 3 lb can had church key holes around the inside rim of the open end and had holes punched through the bottom. this made a decent stove.
After the cans cooled down, I put the plastic lid over the "burner" can, placed it inside the "stove" can and placed it's plastic lid over it, placed it into my pack and went on my merry way.