I cut out scraps as I make things during the weeks, and I have a bin of 1 1/2"strips that I can cut into when I need to. I keep a large bin of my squares, and I have a smaller bin, where I put all of my squares to swap with others. For this last swap, I was amazed that I already had enough cut out from just my projects, and I didn't have to cut any out at the time of the swap.. I just counted and bagged them. And that was for 30 sets! I think I've turned into a factory!