I had a house rabbit by accident in the first instance. I had bought a baby one, and it was so frosty outside I didn't have the heart to put it out yet. So it was kept in a huge container in the spare room, and seemed a very happy, bright-eyed little fella.
One day, when I opened the door to see to him, I saw the back end of him shoot into the container, fast as grease lightning. I scouted around for any signs of chewing or pooing, but there were none. So I left the room but stayed at the door, leaving it slightly opened, and sure enough, out he hopped and frisked around the room again.
I tried to block the container off a bit, pushing it against the wall, pushing a chair up against it, all that sort of thing, but all week he was hopping out and loving his freedom. The thing I noticed above all else was how he kept a very neat little pile of toilet in the container and nowhere else. So I gave up. The rabbit won! The spare room became bunny's kingdom, and then shortly after the whole house.
I tried to move the toilet container downstairs but straight away he would hop all the way into the spare room to wee in the same area the container had been kept. So I promptly put it back! That might be worth passing on to you; it's worth deciding where the toilet is going to be and stick to it or your rabbit will get confused.
I wire proofed for peace of mine, but I don't remember him eating anything he shouldn't. He was having far too much fun with the dogs I suspect!
After that experience, I house trained more rabbits in the future, and even had some living in the house at winter and garden in summer, and it worked quite nicely. Mine would hop up to me and start cleaning my toes or arms, or nose, it was really sweet.