I see this dark black cabinet that has connected cables/lines that would allow you to move an object in free-range x,y across the floor of the cabinet. The cabinet floor has lcd screens [iphones/tablets] and the thing you are moving is a hologram pyramid. So you cant see the screens, but as you move it, the hologram pops up in the black space — if it’s dark enough, you could maybe not even see the pyramid that much. And maybe you can move the pyramid with something other than this weird obvious control system I am envisioning — maybe it would be a cool projected magic leap hand controller or my vuforia avatar box that would be run/controlled _behind_ the cabinet theatre so one person controls it, the other person sees the theatre and holograms and can like direct the other person or enjoy the given show.