No sew fleece tied hammock for a ferret or rat. I just had an old pair of fleece sweatpants that I was going to throw away, but I cut the leg open, cut a big circle, went around, cut strips, tied them all together, & you can tie this to the cage. This was free, and ended up being my ferret's FAVORITE hammock! You can do this with any material you have around the house.
3-way Tube Hammock "Argyle Print with Orange Fleece Lining" Rat, Ferret, Sugar Glider. $12.49, via Etsy.