We bought a Kickeroo for Edith mainly, because she enjoys play-fighting and I thought kicking the hell out of something inanimate that was also stuffed with cat nip would be her idea of a good time. Edith does like it, but she doesn't play with it every day, and she's never brought it upstairs for us. It's no ball of tinsel as far as Miss Cavell-Cat is concerned.
As Nancy doesn't really have much reaction to catnip, other than the munchies, I didn't expect she would be particularly interested in the Kickeroo and she certainly doesn't play with it like she does her crocheted grenade; however she does very gently wash it sometimes and will curl up next to it for a nap.
It's very sweet, if you'll excuse the anthropomorphising of a small pet cat, that she seems to be quite fond of the thing.
This post also illustrated another difference between the cats; Nancy is almost incapable of posing for a picture. Edith would have nailed this one.