Name some things entertainment wise you once enjoyed but no longer exist...
One I thought of the other night was how radios (old ones and even AM/FM receivers) would emit light and cause this nighttime glow in the dark. I even remember at one time taping a strip of cardboard over the radio dial area of a huge receiver I once had because it was too bright.
Or when stacking a bunch of 45s or LPs on a turntable and the relief that two or three, or the entire remaining stack, didn't drop instead of just one record or LP at a time.