I keep mine and put the date on them so I can see my progress. Then when I have to many I use as dusting cloths, floor polishers. they work great in the swiffer, if I serge the edges they can be washed and reused. I stacked a few 12x12 together once and stuffed a pillow. I used some once in place of pellon in a tote by spraying basting spray on them. Lined the drawers in my sewing room that hold my thread, keeps my thread from sliding around.