This a sunflower shaped design for a door stop wedge that you can download free from Thingiverse and print out for free using your (or your friend's) 3D printer.
V2 Update 12/7/11: Half moon sphere modified flatter sphere, making it easier to 3D print!
sunflower_door_wedge.par | 389.5KB | |
sunflower_door_wedge.stl | 195.1KB |