I keep them all. I bought two mesh laundry hampers, one black, one white. I toss the larger pieces into one, and the smaller ones into the other. I have made four baby quilts, three doll quilts, a large king size quilt, hundreds of "mug rug" for hostess gifts, and just gifts in general. I also make a varity of 9 patches to later use in
small or medium quilts.
I even have my quilting friends save their scraps for me.
I have fun with scrappy fabrics, and less gets put in the land fill. I can't toss out fabric, unless it's truly too small.
So, save those scraps. GiGi