I presented a video piece at Maker Faire Milwaukee I called “Apple Watch” which consisted of a Raspberry Pi Model B connected to an Apple Monochrome Monitor from 1988.
The power of component video was harnessed to make a 2012 computer talk to a display that is 27 years old. (Also, Apple used to make solid hardware that lasted a long time!)
The video that plays (after the Raspberry Pi boots up Linux) is the old black & white wristwatch from early versions of the Apple Operating System. The video loops forever and just shows the cursor with the watch hands spinning around infinitely.
You can wait for something else to happen, but it won’t. You can imagine this would fit on your wrist, but it won’t. If the power goes out and comes back on, the Apple Watch will just start up and attempt to run (forever) again. That’s all it does. Really.