I am working on a quilt with 9 different block designs. I precut all the fabric, and put the fabric for each block in a zipperlock freezer bag, then labeled the bag with masking tape "Block 1", etc. for whatever block it was for. When I've sewn the blocks, I remove the tape and the bag is reusable. I hang finished blocks with pant hangers from the department store, and cover them with a plastic grocery bag (with the open end on the bottom, cut a small hole in the top to slip over the hanger) to keep them from the dust, light, etc.