For my next tour, I built myself a hobo stove. I used one can of tuna and one of white beans and brazed them together with brass.
On top, I brazed tree bent wires of steel, to provide enough space for the flames.
It works, but still needs a bit of tuning. I will enlarge the holes on the bottom later.
The whole stove weights about 80 Gramm, and gives you the advantage of not needing to carry any fuel. The drawbacks are that you won't find any burnable material during rainy days and that your pot will get very messy.
The stove is so thin, because I will carry it on the bottle cage on my bicycle.