I am starting this for Winnie.. use organizer cubes as walls for a rabbit habitat. Hold walls together and carpet/grass to the floor with zip ties. Use a shower liner around the bottom to protect flooring.
Bunny condo (ME: mine is this size, and our bunny has tons of room to jump and relax. I put carpeting on one level, and stick tiles on another so he has different surfaces. This house gets many compliments!)