I've always dreamed of a 3d computer, one which displays a hologram from a hovering device that follows your movements. Fromt the hologram, you'll be able to reach in and enter files/folders by touching them or squeezing them w/e. The whole hologram display area is your desktop. At the same time, you're able to make certain parts of the hologram invisible, allowing you to see through in case you're walking when using the pc. Everything is conducted in 3d, imagine creating your 3d character/house by touch! No more keyboardsmouse/monitor!! Only a hovering pc. And of course it runs of sunlight to be energy efficient.