In the last couple of years I've made about 20 jeans quilts (about 76 X 90 inches) for my kids and grandkids. On some of them I put a light batting in the middle but the last ones I've just quilted the denim pieced top and flannel for the backing. Yes...I quilted them. I liked that a lot better than tying. I used crochet thread, doubled and quilted with a country stitch. They've been a lot of fun to make and embellish with pocket and labels and buttons and zippers and just anything that I liked. It has been a lot of work but a lot of fun too. I didn't cut up any levis that could have been worn...just levis that were too far gone.