Ferret Hammock
Ferrets may be best known for being balls of furry non-stop energy. But, believe it or not sooner or later they do get tired! And when they get tired they really do appreciate a soft bed or a ferret hammock. Surprisingly, there aren't really fussy about what constitutes a bed. The main criteria they look for is softness and burrowing potential. If it's soft and they can wrap themselves up in it, you've got a ferret that will sleep away.
By the way, just to let you know. Even though you may think "energy" when you think ferret, they tend to sleep 18 to 20 hours a day. I tell you, that four to six hours of unadulterated vibrancy is tough to maintain! So if you think your ferret is sleeping a lot. He probably is. But his metabolism needs all this sleep. So please don't wake him up so you can play with him. (Even though he may do that do you!)
Keep this in mind while your accessorizing his cage, even before you bring him home. Ferrets are notorious for loving hammocks (it probably has something to do with how their bodies are shaped), as well as sleep sacks, sleep cubes, and beds.
Heck, if you have nothing else for them, they'll even appreciate a T-shirt or some fleece. Ferrets love nothing better than to burrow into their bedding in their sleep (You've heard of sleep walking? (Ferrets sleep burrow. Go figure!)
Many people -- as well intended as they are -- try to substitute wood chips for bedding. This isn't a great idea for several reasons. The first is that it may cause your sensitive ferret to develop respiratory problems. But let's face it, you wouldn't want to sleep on stiff, hard, uncomfortable (to say the least) wood chips. But more than that, ferrets have very sensitive feet. Wood chips may injure those feet.
Having said that, you also need to take a second look at the flooring of your ferret's new cage. If it's a wire floor, you may want to cover it. And it really doesn't have to be with anything soft. Just make sure his feet won't get injured by the wires themselves. Covering the floor could be as easy as taking a piece of linoleum even, or some types of flooring tile.