Rob..I do the same thing, but keep my larger scraps (less than a FQ) sorted by color as I make minis and like to have small chunks on hand. I seem to have plenty in the sized bins, I don't need to create more. I have developed the habit of trimming my backing trimmings to size rather than throwing into a string bin..
12 yo DGD has selected her next quilt... word play quilt with a black back ground...she's going to use my bright scraps to make her letters...I think she's itching to start later in August when I have time..