Hey all. So recently I've been researching on how to make backdrops in terrariums, but all I see is how to make them out of spray foam and styrofoam. Call me old fashion, but I'd prefer methods that seem a bit more natural. So this is just a discussion on basically all things backdrops and terrariums. What are some other ways we can achieve a natural looking backdrop that is both functional, and natural looking, without the use of foam and other crappy stuff. For instance, would excavator clay (or any other clay) work well as a base to make the backdrop for a desert setting?