I keep my current project scraps in a large glass container so I can see pieces, should I come up short on a block. I use a back of the door plastic shoe organizer for selvages, but the same could be used for scraps. I sort mine by color, but you could certainly sort by size. The one I have has 2 larger pockets on the bottom, perfect for strips. The older post I started about (and a picture) is here
http://www.quiltingboard.com/mission...g-t179335.html