I did a project that used the serger to make a fleece quilt. It was fun and the fleece quilt being double layered was super warm. It was sort of like a quilt as you go project so I was serging over 4 layers of fleece at times. I did this with a friend. We got some heavier weight DMC pearl cotton to put in the loopers to make a decorative edge at the end. Wooly nylon would also work.