Pinwheel is my favorite block, and I've made a couple of baby quilts out of FQ's with them. Cut 5" squares, draw a line diagonally across and sew 1/4" from each side of that line. You need two squares to make one pinwheel. Gives the quilt lots of movement.
Just found a picture of it. I have more pictures of it at home, this one is before it was quilted. What was nice about this style is that I could use a busy fabric for the pinwheels and a more simple fabric for the alternating blocks, or you could do it the other way around.