Saw this done on Simply Quilts years ago. It was a challenge with well known quiltmakers. Can't recall the lady's name. She put all her scraps in a bag and reached in without looking and sewed together whatever she pulled out. If you pull a matching square, just throw it back and pull another out. Her finished quilt was beautiful. If you are interested, I can try to find it to see what episode it was. I think I have it on tape....but pm me so I don't miss you. Ellen