Hey Heather,
have you checked with your local pet shops to see if they carry portable fencing or portable pens? They are usually sold for puppies but are excellent pens for rabbits and other small animals. It gives them room to hop about and get some exercise without them being able to get at furniture or electrical wires or make a mess on the whole floor.

That's what I use when I want my buns out for exercise but can't watch them or want to limit where they can go. In fact the House Rabbit Society is now recommending these to be used in place of cages/hutches since they have so much more room than cages.

Just a thought