Jim bunny does a little dance when I feed him carrot peelings. That’s a good enough reason for me to make spicy carrot dip. Appropriate to keep your rabbit as happy as possible coming up to Easter. You could make the dip with pumpkin but it wouldn’t have the same effect on your bunny.
For mental, rather than physical, sustenance there are numerous sources of information, but books still get my vote. Here are my current non-fiction recommendations if you also fancy some reading away from a screen: