Cited as a reference
Wintergatan - Marble Machine (music instrument using 2000 marbles)
Why people recommend it
The Wintergatan marble machine performance, linked as a playful mechanical analogy for a sequencer or memory being stepped through by a counter.
Watch for: Entertainment rather than instruction
In their words
Typical examples would be the first part of Für Elise, or the Marble Machine (Between second 30 and 35 the encoding wheel rotates 1 fifth).
Trish on 3dprinting.stackexchange.com, Oct 2019. CC BY-SA.
Another catchy example of a ROM being sampled by a repeating continous counter, with a few latches to further control the output lanes: [video] (yes, I am 100% positive this is the right video;))
Jonas Schäfer on electronics.stackexchange.com, Nov 2019. CC BY-SA.