As I cut and sew, any remaining fabric gets cut into strips or squares. Then I have a zip lock bag for each size of strip - 1",1.5",2" = up to 4". I just sort as I go and when a bag is full I toss into a big tote and start another bag. The squares go into a clear shoe box. Seems a lot of my quilts are "scrap quilts" so this method comes in handy for me.