I have started making pillow cases to match my quilts out of the scraps , if they are large enough and if they are not I piece them. Then is you use your quilt you have a pillow case to match or if you store your quilt and start to look for it you can tell what the quilt in in each pillow case. Been doing that for several years and it really cuts down on leftovers (scraps). I even try to mimic to quilt top, border, etc. to the pillow case, not just the same fabrics.