The DIY kit SB 4 is one of our most popular kits to build a composting toilet yourself. Everything you need is included. Only the housing of your composting toilet is still missing. The kit also includes a hose to drain the urine. If the urine canister is located directly under the urine separator insert, the hose is not necessarily required. Your design will determine whether it is necessary.
If you would rather have a toilet with a housing, take a look at the In-Vario kits.