His owner has written a couple times about glitches they have run into such as Herby deciding that peeing on them or their couch was the thing to do. I suggested leaving him in his cage, even though it's small, would help him learn to potty in his cage better. Small areas actually help bunnies learn this more quickly.
She also asked about bedding. My go to bedding with rabbits is either kiln-dried pine or wood pellets. As long as bunnies are in a well ventilated area pine works well. I tend not to recommend cedar as some bunnies have issues with it.
Herby has some homemade digs