What to buy for a rabbit ? . A pet rabbit needs an enclosure, usually an X-Pen, if it will live in the house if not a saddlery or a cage with all the necessary tools, cleaning tools for the cage and grooming supplies for the rabbit and finally a first aid kit. The rabbit's cage must be equipped with a hay rack above a large litter box, a water container and two others, a smaller one for pellets and a larger one for plants, an absorbent mat on the floor, a bed, a shelter and lots of toys