I will show you how to build a Pocket Rocket Stove. If you don't know what a rocket stove is, have a look at "rocketstoves.com" or search at Youtube where there are tons of very good videos to get inspiration from.
Materials needed: 1x oval bucket with lid 1x stove-pipe 120mm x 1 m 1x stove-pipe 130mm x 50 cm 10l hydro clay for hydroculture-plants 2,5 kg chamotte mortar
Everything costs about 35 EUR
Tools needed: hammer (optional) oil (optional) marker pen drill metal scissors scraper bucket (for mixing the mortar) bucket with the same shape as the bucket for the stove but slightly smaller plastic bag water