A 3.5" vinyl sun catcher of a hedgehog! You can put it on a window, and it'll reflect iridescently in the sunlight. The colors will shine when you walk past it!
To use, clean and dry window. Peel off the transparent backing off the back (the artwork is white on the back), and stick! It's a static cling material, so you can re-stick it as many time as you want.