Here is a useful idea for a permanent or semi permanent bush camp. Advisory: there is a risk of carbon monoxide poisoning / scorching if not installed properly.... Note: do not use galvanised iron piping.
The Finnish/Swedish torch is a useful means of heating, and cooking...and, with a suitable container, heating water. vertical cooking using a Finnish/Swedish torch and making an improvised bow saw (using a bow saw blade, and some other odds and ends.