I had one cat, the only toy she wanted was a poofy ball. She'd carry it around the house in her mouth when she wasn't chasing it. Another liked catnip mice. She'd lick them all over like she was cleaning a kitten, then tuck it under her to "nurse". I guess she always wanted to be a momma cat. And of course, mom's office supplies are ALWAYS a hit -- not because they're fun to play with, but because it's fun to wind mom up and make her chase after them to get them back. :-)