Rabbits love to chew and explore. Not providing adequate means of chewing and exploring creates boredom, and also goes against their very nature and instincts. Most owners are quickly enamored by their rabbit's curious nature, and see it as a way for their pet to acquire mental and physical stimulation, as well as necessary tooth wearing.
Rabbits like to explore many textures and toys at once, and you will need to be careful about the types of toys you provide. Make sure they are made of nontoxic materials because it is likely your rabbit will chew on them. Be certain there are no small pieces that may come loose and become a choking hazard. Also, if you are allowing your rabbit some play time outside the cage, use an exercise pen, and make sure he cannot access electrical cords, heating/cooling vents, wood furniture, or anything else that might be dangerous or off-limits in your home. (Remember, rabbits think those things are just as much fun as toys.)
Every few days, it's a good idea to rotate the toys you allow your rabbit to play with to add more variety. The following are some of the toy options that rabbits love to toss, dig at, explore, or chew, and you may already have some of these items around the house.