Print out this flower pinwheel template on A4 or Letter size cardstock. If you want a two-toned flower pinwheel, use different colors of cardstock for each page.
Push the pin onto the eraser of a pencil. Leave a small gap between the paper and the eraser to allow the pinwheel to spin more freely.
As an option, you can put a bead or small button between the pinwheel and the eraser. This helps the pinwheel rotate better and prevents the pin's point from going through the other side of the eraser.