Jax favorite toy is a set of keys. Odd I know! My boyfriend and I both have long lanyards attached to our keys and most of the time the lanyard is either hanging out of a pocket or my purse. Jax would ALWAYS pull the keys out of our pockets or my purse and run around the house to make them "jangle". So we took an old lanyard of mine and attached them to some random keys. He just runs around dragging the keys to make noise.