I cut 8-1/2" squares this past winter out of an old jeans stash and, alternating squares with a colorful brushed denim-like fabric that I'd had for years, I had exactly enough of both types of fabric to make a lap-sized rag quilt for DH. At the time, he was having and then recovering from open heart surgery & subsequent complications. It's absolutely amazing to me that I had exactly enough of both denim (in a variety of weights & shades of blue) and the colorful mystery fabric to make the quilt; if I had needed even one more square of either fabric, I would have been in trouble. We are a family of 5 and there is denim in that quilt from jeans worn by each of us over the last 30 years. For a variety of reasons, I'm pleased with the quilt, but have no desire to ever sew any more denim.