Have you visited Keepsake Quilting in Center Harbor, NH? It's a gorgeous quilt shop well worth the trip. I noticed they're offering a pattern for selvage placemats. You probably already know how to do this. (Lay your selvages on a foundation and then sew along the bound edge of each selvage, being sure to cover the raw edge of the selvage underneath.) I thought it was interesting to see selvages featured in a "mainstream" quilt shop catalog (shown here).