I am currently using a charm pack that is all florals to make a pinwheel quilt. I am using the easy pinwheel construction that I saw (I think) on Eleanor Burns website. You place two squares face to face and sew around all 4 sides 1/4" inside. Then you cut from one diagonal to the other (top to bottom), then diagonally side to side. Open up the 4 pieces, trim the dogs ears and sew together for a very fast pinwheel. It's so fast and easy, especially if you are starting with square precuts -- doesn't matter what size.
cheers