I save almost all my scraps . When I have a pile, I start cutting from the largest to the smallest squares. I start with 7 inch all the way to 1 inch. I then put them in plastic bags and label the size on the outside. I also cut rectangles 6 x 3 inches , this come in handy when mixed with the 3 inch blocks and then a big square. I also save long strips for my strip quilts. I guess , I just don't like to throw material away.. A lot of this I give away at my church sewing/quilting classes.