they had some flatter bed thingies that are designed to fit in a crate, but they are round and would get knocked off of the table when the boys were doing the spastic kitty thing across the table. I thought the rectangular ones would stay put a little better. Plus they're a little plusher. I have their extra-tall (30-inch) scratching posts on the sides of the table to attempt to hold everything in place. They love the tall posts too since they can lay on the table and scratch at them or stand on the floor and really get a good stretch while scratching.