Ken put together two cages and made Flower an extra level to climb around and play in. I added a wigwam, cuddle sack, honeycomb hammock and a regular hammock...so what does she sleep in?
The fleece blanket covering the floor. lol I had originally lined the floor with the cotton baby blanket you see her laying on but she kept pulling it up to sleep inside it so I added a fleece blanket on top of the baby blanket and sure enough she makes a little cave under the fleece blanket and sleeps there most of the time.
She sleeps or lays in the other hammocks at times but not as much as she does under the blanket. I don't think she'll have a problem keeping warm this coming winter.
Rats never do what you expect them too...but that's what is so fun about them.