I picked up this Ferret toy as a set of stairs for Whimsy's cage, the vinyl dryer ducts I was seeing other people use are illegal here and impossible to get. It's pretty much perfect, I used zip ties to secure it to the sides of her C&C cage and it provides a gentle slope she can walk up easily. It's also very easy to clean, just remove and run warm soapy water through it. My only problem at all with this product is that if Whimsy crawls into it and goes to sleep I can't get her out.
http://www.petco.com/product/5301/Super ... erret_Toys