Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?
Being able to take the building apart at the end, so its materials can be reused rather than crushed. What decides this is how the parts are joined: screwed and bolted assemblies come apart, glued ones do not. The options differ in what they keep replaceable.