I have two boys in a minimum space cage. I want to completely revamp a new cage for them from scratch. So im looking for any best ideas for the interior. I know a lot of people do fleece. Does that need to be replaced every time i clean them? What would be a good alternative that i can throw in the washer and clean? for the cage im planning on buying those metal do it yourself cubes. the ones you can build on top of each other for storage. and plywood for the bottom. i had also bought a ramp a while ago and the boys were not interested at all. i think maybe there was no tracsion on the ramp. what would be the best fabric to put on a wooden ramp?