My bunnies make a mess with a litterbox digging box! To let them have digging fun, I made them a digging box out of a cardboard box. The box is 24″ x 14 or 16″, top flaps folded inward but not closed, two doorways just large enough for them to get in and out. I got a doodle pad (unprinted newsprint) and tore the paper up, balled it up, cut up cardboard shapes, and tossed all that in the box. The balled up paper is about 3 inches deep in the box (comes to the bottom of the doorway cutouts). They love it. Marlee like to burrow in it and Moshi likes to dig and toss the paper around. They invariably drag a little paper out but its easy to just toss it back in the box.

They might. Most bunnies seem to prefer two doorways so they always have an escape route. With balled up paper, you wouldn’t really need to cover it because its easy to clean up. I did cut a piece of cardboard to put as a second layer in the bottom of the box because Marlee found the bottom flaps and was tearing them up (can’t use tape)

The bunny will ultimately decide whether it is a litterbox or not. The M&Ms have never left a single poop in their digging box, and Kieko has 2 litterboxes (literally litterboxes with litter in them) that she only sleeps in. Kieko will, however, pee and poop in a cheap cloth hidey/play cube I bought. All you can do is give it a try and see what the bunny decides.