I like this, but the instructions are in french :o/ I think I could figure it out from the pictures though.
3D quilt blocks
Spring Pinwheel Potholders and Giveaway - Schlosser Designs
Simple but interesting. I could do a different blue in each corner, and maybe do 2 dark blues alternating with 2 light blues
Little Thunder Lizard: 3D Pinwheel Blocks Tutorial
Folded Hexie Flower #quilting #embellishing
3-D Pinwheel quilt. Pumpkinpatchquilter.com for tutorial http://www.pumpkinpatchquilter.com/2011/09/3d-pinwheel-block-tutorial.html