HoloToy lets you play with 'holograms' in your Iphone and Ipad.

The HoloToy app is only a toy, but it sure looks awesome on the Ipad screen, the best way to describe what this app is about comes from the developer's website:

HoloToy is an interactive hologram unlike anything seen on the AppStore before. Using anamorphosis perspective projection and the accelerometer HoloToy produces realtime images that emulate reality based on a constant viewing angle. In english, these are interactive 3D scenes that appear to live both within and outside of your iPhone or iPod touch!

There are 8 different holograms included with the app and the developer is adding more with every update, the ones that I liked the most were the interactive aquarium, the miniature robot, and the bouncing ball; but the good news is that you can also make your own using pictures from your device!