They make beautiful pinwheel squares. Just put 2 of them together with right sides facing easch other, then sew 1/4" seam all the way around all 4 sides. Lay it on your cutting board and cut diagonally. Now you have 2 triangles. Then take each triangle and cut them in half. You now have 4 half-square triangles. Open them up and iron each piece. Lay them out and carefully place the four squares together to form a perfect pinwheel square. This is so easy. Then just use sashing between your beautiful pinwheel squares, add some borders. Your finished pinwheel square will be 6" x 6". I used charm squares that are 5" x 5" to start with. Have fun with this!