Years ago, I started cutting leftover flannel from shirts etc into 3" and 4" squares. Eventually I MAY may a quilt. Other 'leftovers' go in plastic baggies - some graduate to boxes (blues - my fav color). I like Klue's idea of sewing them together to make a piece of fabric. That's an expecially good idea for blues (skies and water - would have been easier for my baby quilt than the fussy kaleidescopes!) and lights - which I never seem to have enough of. I think I'll try that.