I found this two story rabbit hutch on Amazon. It's insulated with styrofoam and has plastic over the wire parts. Of course the ramp need railings, but otherwise I thought this might be a pretty good option for people with smaller/young torts. What do you think?
http://www.amazon.com/dp/B002W8MEAW/?tag=exoticpetnetw-20
http://www.amazon.com/dp/B002W8MEAW/?tag=exoticpetnetw-20