I have started sewing checkbook covers recently. They seem to need something to stabilize them, and I have been using cardboard. I was wondering if anywhere sells thin plastic sheets (like margarine/yogurt lid thickness) that I could cut to fit. I don't sew through it, it would be removable. Or somewhere online would work too.... or any suggestions to use stuff I already have! Thanks for your help! :)
Plastic canvas works well for that. Michaels and Hobby Lobby both have it.
