I never "stuff" scraps as I hate ironing them! I used to do that, but decided it was much easier to use them if I folded them and stacked them. I only precut scraps when I am cutting for another quilt and I have a WOF piece left, then I might cut it into squares of that width and keep the squares together to be used later.
Small (tiny) scraps I keep neatly stacked together to be used for crazy quilt patterns or other small-scrap quilts. Scraps at least a Fat Eighth up to less than a yard, I keep together in bins. Yardage is kept separately in another bin. I am a ridiculous hoarder of scraps and keep all pieces that measure one inch wide or larger. I am making a crazy quilt from mini blocks that measure just 3.5 inches when finished. I am in no hurry to finish this quilt (good thing, too!).
