They also need space - ideally a rabbitproof run, with timber shapes and drainpipe tunels and things to investigate, as well as their hutch to run into if they feel threatened. They gnaw instinctively and love the wood from fruit trees - apple or pear prunings are greatly appreciated. They tend to always settle on one corner for the toilet - hutch or run. I knew someone who once put a litter tray in the chosen corner which they used happly, making cleaning much easier. Remember they quite like their own poo, as they eat it to recycle any leftovers (honestly), but if their urine stands around for any length of time it gets very pongy even out in the open.
They also appreciate a bit of hay, and some bedding but they tend to chuck the bedding around a lot.
They are also totally amoral and will hump anyhting smaller than themselves, irrespective of sex, which I suppose accounts for their breeding success.