I need to make a new pen inside for my winter babies. Theyve outgrown the tote they were in. Its going to have to be built in my basement so im hoping they stay warm enough. I was thinkinh of making some sort of frame and lining it with thick plastic sheeting. Maybe doing a layer then adding shavings or something then more plastic to insulate it from the floor. They will still have a heat lamp to sit under for warmth. Does this sound like it will work? Any ideas would be helpful!