Doesn't your cat deserve fun?  I've made some cat toys and added catnip inside.  I've used cotton and flannel and stuffed with polyster stuffing.  The price is $2.50 each.
I've also made some quilted Cat Play Mats. The front is 100 percent cotton and the back is a soft flannel. I've also added a back pocket to add a small bag of catnip. They are from 10 inches to 12 inches square. The price is $7.50 each.