I only save scraps 5" or larger, and donate the rest to a facility that teachers can use for their art classes and classrooms. I can't deal with all the scraps or clutter and would never hunt for the right fabric if I can't organize them. That being said, I keep all my batik scraps, as I do a lot of applique. I used to save selvages but I quit as I have enough to do a "string" picnic quilt with them and maybe more.