I store each size in small plastic baggies. When the baggie gets full I get another one going. When I had 8 I sorted by color. Of course some have more than others. This is an annual job for me to do in this kind of weather, bitter cold). I also sort for smaller size pieces for DWR pieces when I am thinking of making another one. I have Thousands of pieces cut for a future DWR now in all colors of the rainbow. I have a bin that goes under my bed to save all the scrap squares of every size until I need them for a project.