The Cat Cocoon is a sculptural furniture piece made out of layers of laser-cut corrugated cardboard- all glued together to provide a nice playhouse for your cat. The rippled cardboard texture doubles as a scratching post. And finally, the glue used in the process is water-based, which is generally less toxic than standard glues.
Designed by Warren Lieu and available at PlushPod, The Cat Cocoon is now patented, U.S. Pat. D523,182 under pet habitat so you can’t copy it exactly, but perhaps you have a hamster, rat, or gecko that may enjoy a Ponoko produced laser cut habitat?