I don't pre-cut my scraps either. Rather I throw my scraps into the plastic bins marked for a certain size. I guess or measure at times what the smallest part of the scrap is and then that's the bin it goes into. Then when I need a certain size I know I can pull out the bins marked needed. That's what I did when I went to make a checkerboard border. I tend to throw my scraps into a large basket under my cutting table till I find the time to sort them by size. Just found the time and came up with over 500 2.5 scraps for my borders and sashings for a little wallhanging made up using some embroidered blocks I made back in 2004. Found them in another plastic tote under the quilt frame. Had forgotten all about them.