There are many different kinds of toys for ass play pleasure. The few hard and fast rules are: Never insert anything in your anus that does not have a base or ring to keep it from sliding all the way inside. You'll have a tough time getting it back! Don't insert inflexible straight objects into your butt because the rectum has a curved shape, so toys that are hard and straight can be painful if pushed too far inside. You want pleasure, not pain! We suggest using shorter toys.
If you are using a long butt toy, make sure it is pliable. And don't forget the lube!