I'd brought up the idea of using polar fleece in another thread. It was basically seen as having potential. RATTIE, do you know what cozies are? I was planning on making some for my guinea pigs. If you know how to crochet, you might know about felting. I was toying with the idea of making felted tunnels for snakes to burrow in. I know some snakes may enjoy hammocks. I have a snake that has started to insist on draining his water bowl (by pushing the paper towels until they soak up water). Then he lays in the bowl. I'm now trying to convince him that a second, and empty, water bowl is better to use than turning his tub into a swamp. A hammock may work for him.