I throw away anything smaller than 1" wide. I find that if I cut my scraps immediately, instead of putting in a bin for later cutting, I will use them. I have containers for 2.5" WOFs, 10" squares, 5" squares, 2.5" squares, 2" squares and 1.5" squares, as well as strings that are less than 1.5" wide and at least 6" long. I also save my selvedge edges (cut 1" wide) - just reupholstered my daughter's dining room chairs with them!