Candle/Stove made from Tuna tin, wax and cardboard
Empty Tuna style tin 185g size
Corrugated cardboard box
Heat source and vessel to melt wax
Tear cardboard into long strips just slightly taller than the tin, roll it up into a coil then put in the tin it will spring open.
Melt wax and add to the tin around the cardboard separating the coil.
When wax has set this will then make a lamp/stove that will burn for hours.
You can also purchase lids at the supermarket that will go on the tin for carrying it in your kit bag.