Originally Posted by
Razorfeld
Shaotzu, foam core board cut 3" x whatever you want (actually 12" is most likely the best), heavy duck cotton cut 5" x 14" if going with the 12", rubber cement duck cotton to the foam core after notching the corners to avoid bulk when you wrap it to the back. Then, as they say, go for it. It works for some and it doesn't work for some. Cheapest way I can think of at the moment. And all the materials are available at Jo Ann's Fabrics or other craft/sewing stores.
To quote Lynn, "Have fun."