Kittens can make a toy out of almost anything but all cats seen to have an inborn fondness for yarn.
This tiny toy takes only minutes to make is ultra-simple with no detail. Perhaps it is the texture or it's resemblance to a small rodent but it seem to be a great favorite among the cat and the kitten kids that have been testing it for me. We call it: "Might B Mouse"
Size I or J hook
Ch 15, sl st in first st and next 6 stitches, ch 3, 2 dc in same st, 3 dc in each stitch to end of chain. end off and work in the ends. What you have is a curlicue with a tail.
That's it, just drop it in the middle of the floor in an obvious place and wait. If kitty does not like it you have lost nothing but a bit of your time and you can make a key chain out of it. If kitty does like it you many never see it again except when they take it out to play.