How about the denim circle raw edge quilt? A couple have been posted on QB and although they are heavy to work on, they always look so nice. There is a free tutorial on the net but it isn't hard to figure out yourself. Just decide on a circle size and trace and cut out of the denim. Draw a square on the wrong side of the circle to give you guidelines to sew on and the edges to fold back. You can put your square of flannel on the circle and stitch the circles edges down.