Judy,
I got a package of "natural" balls for cats with a bell inside from our local Petsmart. It came with four, a light wood color, a little darker one (as on video) and a pink and some other color. I haven't used the colored one as they don't seem "natural" to me lol. I took some hemp cord that I had and ran it through the ball and braided the cord and just tied it to the top of the cage. It is his fave toy by far even though he has quite a few toys. I also put the other ball just loose down on the floor of his cage and he likes to pick it up with his beak bob his head around and then toss it across the cage. *(it is hysterical)* He also kicks it around, like a little soccer player.

He likes to chew on them a little too.