Turning your smartphone into a hologram projector has become fairly popular nowadays, although it's technically called Pepper's ghost to create the illusion. Anyway, I had to try it myself too, right ? Building the pyramid isn't that hard and the first try-out is pretty cool to be honest.
So with that going fine, I opened up Blender to create my own animation just for fun. I took the Drupal 8 logo, ripped it apart and let it build itself up again. I quickly wrote an Android application that would just play 4 videos on a surface; and each video in a different rotation. The app is attached at the end if you want to try it out yourself (works well on Motorala, with Lollipop). If all goes well, I'll make it possible to select your own video and make the code public on GitHub. But for now, just enjoy the video. Or start building your own pyramid, it's really fun.
I've also created one with the Druplicon, based on on a model made by @berkes