From time to time I like to share projects where I've "re-purposed" old items, in today's projects its old wool sweaters that are turned into cat toys. I've been playing with upcycled wool sweaters from the local thrift shop (I think the snowbirds bring these when they come here and then discover that they don't need wool sweaters in Florida!) and donate them to Goodwill.
I cut them up, stuff 'em with cat nip and then use yarn to hand stitch them closed. They're approximately 3 inches by 4 inches big, plenty for your cat to toss and kick around, and they're for sale in my Etsy store: Handmade by Rebecca <---- click to go check it out.