As cool as I think the idea of tile is, I was wondering if perhaps it would be possible to make some kind of substrate out of clay...like, you could make hills and stuff....and maybe caves with detachable roofs.....the only problem I can see is that most clay if you just let it air-dry cannot get wet, making it hard to clean. Does anyone know if there are any kinds of clay out there that air-dry well and can be saturated without damage?





