Years ago I found a product called a ‘Purr Pad’, a synthetic wool squared material which cats find comfortable. Luna liked laying on them until I used one to roll around her body and keep her still after major surgery back in the day.
(Oops. Sorry, sweet girl.)
With her long gone they still get used by Jezebel while Tilly prefers certain cat beds or a blanketed lap. One of the funny things I learned about felines is that they like when I move their beds and whatnot around. Sliding the kitty hammock in front of a different window or dropping their little tent into the middle of the floor seems to make spaces new and interesting again.
Not long ago I put one of the purr pads on the guest bed which Jezebel has claimed. For some reason, yesterday she decided she wanted to go under cover. Normally that means bedding but I held the purr pad in the shape of a temporary tent and she dove right in. When I let go, the silly girl stayed.