I’d love to get a MAME arcade cabinet but they would just take up too much space, so I thought of building one into your average door. It would need wheels to support the weight of the flat TV/electronics, and a power source would be tricky to execute. All said, I think this is do-able.
Here is a security keypad and door handle combo that resembles a ColecoVision controller. This would make a great theft deterrent, as thieves are afraid of retro gamers.
The security keypad would be illuminated as well. I could see this emitting video game sound effects when keys are pressed for that added flair.