Hahaha I love his little foot sticking out of the cage in the last picture! He is so cute!
As for bedding… Somre rabbits really do just prefer laying on the cool hard plastic, so you probably don’t have to put anything in the bottom of the cage =) If you want to, or if it looks like he’s having trouble with the slick surface, you could try putting down a towel and see if he’d like that . If your bun enjoys chewing fabric, you can use an old fleece blanket or some fleece scraps – you could probably get some pieces for a few bucks from a fabric/sewing store from their leftovers. The thing with towels is that they have strings that can cause an intenstinal blockage or get wrapped around teeth if chewed.
Also, having litter in his box and then bedding in his cage might confuse him – some rabbits like to pee on soft things, so it might help with litter box training if you only put the litter in the liter box.
I would actually stay away from any sort of wood chips for bedding. Some woods like cedar have aromatic oils and may cause liver/kidney damage if used long term – I hate that pet stores sell wood chip bedding as if it’s really ok for rabbits
There is a list of bun safe woods that you can use as treats (like untreated apple tree branches)… I’ll try to find that for you.
If you want to cut costs, use wood stove pellets instead of the more expensive pet store litters like carefresh. I swear by WSP (they’re processed differently from wood chips so they’re safe to use). Theyre super absorbant and really cheap. Check your local home improvement store. I can get a 40lb bag for $4 from Menards – less if the bag is ripped and a few have spilled out. I always look for the messed up bags if they havent lost too much, since the store will usually give me a discount for it. If your bun is picky and doesnt like the hard litter (cus WSP are a bit hard until they get wet and then they swell up like crazy!) you could do a layer of WSP and then a smal handfull of the softer carefresh and hay on top. Oh and if you don’t already, I’d suggest using a few layers of newspaper or paper towels under the litter, it all peels out in one piece and you dont have to worry about scraping out any stuck bits from the bottom of the litter box.
Whew. Long post (that I wrote twice cus I accidentally hit the back button!). Hope that helps!
ETA: I can’t find a list of rabbit safe woods… anyone else know where to find one?