Well, thank goodness for sons!
My first attempt at scrappy quilting looked a mess. I asked someone how hers turned out so nice, and she said she separates scraps into brights, pastels, civil war, etc. Then she pulls from one category. Worked well. I am doing that from now on.
My last scrappy was 16 square blocks. I tried to do it random. But I wish I had put a square of each fabric into a pile for each block, it would have been easier than trying to spread them evenly over the quilt.