I had a cat with similar habits, but it was always empty balloons. She’d even try to catch them out of the air. I’d try to throw it in such a way that she would have to do flips to catch it, and I did get a few full flips. This was mostly a morning game while I was lying in bed. It ended when we moved and she had access to birds instead of objects vaguely like birds. It was also way less fun for me when she would bring the dead birds to our bed.