I too have lots of small scraps and they are all sizes, colors and shapes. I am in the process of making a quilt as you go project. I'm using a white back because of all the colors. The white will also be the sashing. My top(scraps) and batting is 7 1/2" and the backing is 9 1/2" which gives me one inch around block to sew blocks together and make the sashing. By the fabric being all different sizes, the abstract quilting is beautiful. Just an idea. I work on this as a second project.