I've done this before, I cut 2 1/2 inch squares from scraps left from quilts as I make them. I put the squares in a; box til it overflows, then spend a few days sewing them together into the 9-patch blocks, then divide them into pinkish, or the bluish blocks and make baby quilts for newborns at church. I have two more to do, a green/yellow one and another pink. These quilts are so fun to do, fairly quick and easy and the quilting itself is fun. this first pink one doesn't show up as well, the very light blocks have a very nice, subtle pink/green/white stripe in the fabric.
