that depends on who you ask. At my one group we sew for the children's hospice. We take the smaller pieces people donate and then take a strip of fabric, any size strip we have and start sewing the small pieces to it. THen those are cut apart and sewn to another strip. and so it goes until we have blocks about 6-8" usually. TONS of mindless sewing which is good they way those get to yacking..hehehe