With Think Geek’s clever kit, you can transform your 2D pictures into 3D images. Using “lenticular” technology, the kit lets you “take any standard photo in .jpeg format and, using the included PC software, define the areas that will pop-out.” The kit ($25) includes a special filter under which you place your image for the complete lenticular 3-D effect. You can read more about lenticular technology on Wikipedia.