The best bedding for a pet rabbit is typically made from materials that are safe, absorbent, and comfortable for the rabbit. Some popular options include paper-based bedding, such as recycled paper pellets or shredded paper, as well as hay and straw. It's important to avoid cedar or pine shavings, as the aromatic oils in these woods can be harmful to rabbits. Be sure to provide enough bedding for your rabbit to burrow and nest comfortably.