Cats crave warmth, which is why they're wonderful bed companions on a cold night. But when you can't be there to provide snuggle space, your cat will appreciate a soft bed to sleep on.
The Denver Dumb Friends League uses old toilet-seat covers to cushion cats waiting for adoption. The covers are the perfect size for most cats and provide a perfect option to throwing out old covers when they're worn or your decor changes. (If you have extras, check to see if your local shelter will welcome the donation.)
Since covering upholstery is one way to protect it from cat hair, you might put a seat cover or two in places your cat loves to nap, such as the couch or a favorite chair. Whatever hair ends up on the seat cover won't get on your upholstery and will easily come out in the wash.