I am probably going to build my own. I think the ability to disassemble and reassemble this is awesome. Also it makes it fairly simple to have five different light cycles going in an average size room. For the walls I am thinking of making a double layer. With the outer layer being black canvas and the inner layer being something that can be roled up and take a little bit of abuse (basically I want it to be able to go through anything the canvas can go through (except machine washing.)) I would like to use mylar for this but I don't think it could handle much abuse. If anyone knows of anything that is comparable to mylar but more flexible and durable it would be good to hear ideas.