I save those & any other scraps in a big bag for grandkids. The boys love to "sew". I made a "sandwich" of a rectangle of muslin front & back with thin batting. When the boys are over & not entrenched in DS I put them each at a machine & let them sew. They love to try all the stitches-usually I put in a colored thread. The 10 yr old over laps his like a crazy quilt & the 7 yr old puts them all over. Even if they get trashed in the end it's great practice for them.