My son's apartment cats go nuts with one..esp the younger one.

And my youngest of the three here plays with it some.
But since my cats do have the option of going out...they find it less
exciting...you know, hohummmm... no wings, etc!

Another game that is hugely popular here is a pipecleaner rolled into a spiral,
on your finger, then flicked into the air, for them to leap up and jump on.
When this homemade toy hits the ground it bounces in an unpredictable manner and the cats love that! I turn in the ends where the sharp metal is --I just fold it over a millimeter or two.

But we do that "READY" business as well. I will call out "READY" and count to
3 and flick the pipecleaner up into the air and you should see the leaping...
it is fantastic. They carry them off eventually and I guess every nook and
cranny is filled by now with them! One pak of the soft white ones, lasts a long time tho. Our middle kitty even sneaks up to the pak and pulls them out with her teeth. (a little disappointed tho, that they are straight and not
in the spiral form!). Since my husband smokes a pipe, they are always around here. But many people don't have experience with pipecleaners, so wouldn't know how much fun the cats can have with them!