It’s pretty easy to litter train a bunny. They do intentionally leave territorial poops anyway, but those are hard little balls at the edges and corners of the room, so not too obnoxious.
The most difficult thing about a free roaming bunny is that the like to chew (it’s more correct to say they have to chew, since their teeth always grow), and getting them to chew what you want them to chew, not what you don’t want, is a challenge.
When I was in college, I worked at a junior high, doing noon supervision and stuff. One day I was walking down the hall when a teacher came up with a 13-year-old girl and asked me to take her to the principal’s office so her mom could bring her appropriate clothes. The girl was dressed pretty inappropriately for school, for sure, with a very revealing top and booty shorts.
So I take her there and I’m to wait to escort her back. The mom comes, and she’s very apologetic. She said her daughter wasn’t dressed like that when she left for school, she must have changed in the bathroom. She said she was very sorry and would make sure it didn’t happen again, etc.
The thing is, the mom was basically naked, She had on a tiny skirt, a translucent shirt, and no bra. I could tell the principal was completely flustered and was trying to figure out something to say, but eventually just said thank you.
The thing we found worked well for cords were those tubes with a split down the side that they sell for cable management. They’re big enough around that the bunny can’t get its mouth and them.
The harder things for us were wooden chair legs and the like. Basically it was a matter of making sure there were things the bunny preferred to chew around, so the house was strewn with wicker baskets and stuff.