I'd cut them into fairly large squares, maybe 10-12 inches, and make quilts for times when you don't want to use your special creations. Maybe even use a whole tablecloth for the back. I had a picnic quilt made from the legs of DH's old work pants (polyester) that got a lot of use until it disappeared. Or you could donate the finished quilts. Bet there are lots of people who would appreciate them.