background wall material?

[buffalo]

Want to make a backgound wall need some ideas of what to make it out of.
I've made one from cement and other material looks good, but have to remember cement expands and expansion could mean broken glass.
Let hear some other natural looking ideas.

[Grimm]

Lots of options:

-Expanding foam covered in; silicone/co-co fiber, a glue/peat mixture, or a bonder/peat mixture
-Foam board, glued together, then sculpted into into the desired design, and finished using one of the prementioned methods
-Clay (100% kitty litter, or sodium/calcium bentonite powder), mixed with peat moss and other fine granulated naturals.
-Corkbark flats, rocks, and dritwood, attached to the background using the expanding foam

Those are only the methods I have tried so far. There are certainly more. All of them have their advantages and drawbacks.

[vmax3000]

I am in the process of building my own terrarium. The one that inspired me had peat moss attached to the glass (gorilla glue or some other non toxic). It had little green bits of moss that the owner said started growing on their own. He had attached tree branches across the width of his terrarium. It looked really cool. If I can find the picture I took AND it's decent, I'll post it.

[Kaity]

Have any of you tried mounting moisture loving miniatures like lepanthes on clay backgrounds?? Or would that be a recipe for rot?