I can't seem to upload pics on here. I have tried repeatedly. I am assuming it's because I have the dreaded dial-up.
I have 2 huge plastic bags that I seperate my scraps into..one for strings or lengths of fabric, the other for smaller pieces that can't be used anywhere else. To make a string block, I placed 2 fabrics right sides together across the diagonal of a background block. I NEVER cut the lengths to exactly fit the backing square, therefore I always have extra fabric hanging off the sides. I sew, press, sew & press another. THEN I make my cuts to even the edges up. It results in 2 or 3 pieces of fabric sewn together, ranging from an 1 inch to 3 or 4....depends on how close I cut them when I run off the side. These go in my crumb bag, so when I do get around to making them, I have several beginnings to blocks.