ThinkGeek is now selling a Tshirt with an LCD screen built-in so you can get that Pong Retro Arcade Feel whenever you look down.
There is however several flaws I see. Firstly, the Pong Tshirt is not playable. Secondly it is silent which means the audio immersivity of the full arcade experience is missing. And thirdly it's animation cycle is so limited it won't tell the time.
Still a good attempt and possibly a worthy suggestion as to how the industry should preserve video games for future generations.