It only takes about 20 minutes and a little bit of patience, but you can turn your phone into a 3D hologram projector with just a few items you probably have laying around the house.
Grab an old CD case and dust it off. You'll only need that, some tape, and a sharp knife.
Mobile users can see the how-to video here: http://tucsonne.ws/1NbK4UB
Once your creation is completed, you'll need to click on the video that's made to project the 3D images here.