Neat Idea but I've heard rabbits can get bad diseases and Parasites from being kept on the ground. Rabbits can be the King of their bunny kingdom with this easy to make rabbit tower, they can shelter underneath too.
Pallet gardening, perfect for gardening within a small space. Always take advantage of empty vertical space--it will leave your balcony or patio looking clean, not cluttered. I frikn love stuff made of pallets!