I used coroplast with fleece over it I wasn't sure if he would chew on it but it's been 2 weeks and he hasn't touched it! I looooove it and so does he- I think he's more comfortable on a surface he has good traction on instead of a plastic base with bedding. Thanks for all the great comments and ratings!
I love all this space and so neat and tidy. I'm going to steal your idea. I have a rough 5 x 2 and my lily loves it so for, so I'm going to add some pretty fleece and ziptie it together. I am also thinking bout keeping her cage on the end as well. Idea Idea, I'm not sure yet. I had to step away and look at more pictures