All 8 of my buns have cages with wire bottoms. Tootsie (4-5 lbs bigger than the rest)also has an area outside her cage that is penned in and has a wooden floor.
Blankies are the favorite of my buns. I also use grass mats (which usually are shredded within a few days).
They switch from resting on the blankies or mats...to resting on the plain wire bottom of the cage. Temperature seem to be a factor in this. If it's a bit warmer then they lay on the wire all flopped out.....colder temps and they're on their blankies all poofed up.
Occasionally certain buns will use their litter pan as lounges:disgust:. Hence, Binkie's nickname of "Stinkie-Binkie"! I use Woody Pet in the litter pans. ***did someone say WoodyPet??***
Mooshu and Chippy prefer sleepie boxes. Mooshu lines hers with timothy hay and fur. Chippy lines hers with blankies and fur.
Each bun is different. It was quite frustrating at first because I expected all buns to be relatively the same in their habit. NO WAY!!! By the third bun I realized they were as different as people can be.
As for shaving....... I use "kiln dried Aspen shavings". Kiln drying eliminates the harmful aromatic oils. Stay away from pine or cedar altogether.I used to use aspen shaving in the drop pans of the cages, but just recently stopped, because the buns are all litter trained and it wasn't necessary anymore (saving $$).
I also used to use newspaper, but my white buns were always in need of having their feet cleaned. As most newsprint inks are soy-based, so they are deemed to be safe.
~Jim