There are still tables available at Assembly in Helsinki. I also have ready made DiscoHAT boards that can control pretty much anything related to sound, lights, bubbles, fog, pyrotechnics. All controllable with OSC through Python. It also controls video out through hdmi. So technically we could do anything in no time. The question is more like "what would be cool".
I wrote a game "Shaken, not stirred" for the 7DRL (7 day roguelike contest) a year and a half ago. One thing that comes to mind would be to do a 3D experience with ambient lighting based on that code.
Anyone interested in teaming up?
Edit: to clarify the plot and ambient lighting a bit. External lights would be part of the game/demo (blue/white blinking while driving a police car, white flashes during gunfire, disco lights following music in the Casino and so on). The plot is a typical 007 thing with fast cars, beautiful ladies and a ticking bomb. The playing time is max 10 minutes. Because that is how much time you have to disarm the bomb before it explodes.
The action is old-school graphics with full screen characters.
The game part is logic solving. Pieces revealed by saving the ladies. A lot of pink/red hearts flying around in this demo. There is a bit shooting, but the point is not in the action.
It could be run as an automated demo or as a game where you make the decisions.
The plot, game mechanics and storyline are defined. So there is no "inventions" to make. This should make the task manageable.
To keep the design affordable we could implement it as a mini-scene. The display lying flat on the table. A reflecting glass for projecting the action. Three sections of LED strips for ambient lighting. Miniature fog generator.
The other options would be full sized scene lighting and beamers. But there may not be room for that at Assembly.