I didn't keep small scraps. Recently, I began keeping strips. One gallon ziplock bag has 2.5 inch strips, for a future jellyroll, and one bag has other strips. My "scraps" are usually the extra backing trimmed after sandwiching my quilt, about a foot wide sometimes. I have them folded and sorted into two stacks: solid/not solids. I haven't made a scrappy quilt, yet, but am quite inspired by the onesI see here.