I love these physical mechanisms for controlling the software that surrounds us. Not enough physical UX out there; all the industrial designers seem to be in love with single button controls or touchscreens or capacitive panels. I presume they're cheaper than switches with a nice thunk or dials with a nice clicky feel.

Unfortunately, it takes a fair bit of time and skill with microelectronics and fabrication to build these things.

My 7 year old has figured out the Roku app pretty well and can play stuff on PBS Kids or turn on the Nintendo Switch without any guidance. His 3 year old brother, not so much.