If it’s bar chewing, it can be helpful to cover the outside of the pen so the rabbit cannot see the other side. Typically they chew bars to try and “get out” or remove the obstacle, but if they don’t see anything on the other side, then it is not as tempting.
In terms of toys, human sleep-time overlaps with a rabbit’s natural active time (late evening and early morning), so if your rabbit has that energy, it is positive to give ways to let him engage, but I understand it can be loud. Perhaps you can have specific night-time toys that make less noise? I’m thinking of toys that aren’t hard plastic or wood, so maybe hay-based toys, loofahs…. those don’t really make loud sounds as much as plastic cups getting thrown against a pen.
Edit: Loofah is not a shower loofah; natural loofahs.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.