Since the D9P is made with a basic 9-patch I think the minimum numer of fabrics I would use would be 9-12. In most of my D9P quilts I buy a solid or print fabric and use it in the center of all the blocks to give the quilt more continuity. Sometimes I find a print fabric that blends well with my charm squares and use it in some of the blocks and then use it as the border. You might be surprised how well all those kprints would look when they are cut up and re-arranged. Just remember to have fun....Barb