I keep all my orphan blocks and units in a plastic tub labeled as Orphan blocks. When the box is full I pull the blocks out and start designing on my design wall. Adding in strips as needed to fill areas as needed. Nothing goes together color wise but it all works together if not to make a beautiful quilt, then to make a utilitarian one. I then sandwich, quilt and donate it. My son snagged one as he thought it reminded him of me - scrappy, I guess:-)