My 2 little spoiled three-day-olds just moved from a small hampster cage into their new digs. I have a dog playpen set up on the day bed in my office on top of a tarp. The mattress is a kidpedic memory foam mattress and it is hard as a rock so please don't fret about them being on a soft surface. When they get bigger I'll slide plywood under if it is a problem. They have a heat lamp at one end with a crawl-in sleeping bag. At the other end they have the big Brinsea contact brooder with a little bed underneath. They have lots of hanging bird toys with bling and a mirror with a bell on it. They have food and water and lots of space to run around.