The size of the cage should be influenced by the amount of time spent inside it. Purchase crocks or heavy clay bowls from pet-product suppliers. Designer pottery from other sources may contain lead. Hanging water bottles take up less space and make better use of limited space in starter cages. Where space is not a problem, crocks can be used for food as well as water.
Heavy clay is preferable to lightweight plastic.
Plastic bowls should have wide lips that can't be gripped in bunny's teeth and turned over. A hanging feeder, like a water bottle, allows more floor space inside the cage. This usually requires cutting the wire to fit the feeder. You will also want to include a litterbox. Click here for information on litter-training your bunny.