You can make her a small ball to play with out of scraps of yarn. I used size 5 circular or double point needles. I cast on 20, increased in every stitch every other row, then decreased for a while. Stop when you get near the end and stuff it, then continue on. Sorry I can't give you a specific pattern, as I rarely use one but make stuff up off the top of my head.
Another thing is to knit a small tube. Get an empty medicine bottle with a childproof cap. Put jingle bells inside and close it up. Insert the bottle into the knitted tube and sew up the ends. This is a dandy cat toy.