videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including The Cube & Octagon Japanese Puzzle Box by Akio Kamei - NOT A SPOILER!, The XY Japanese Puzzle Box by Hideaki Kawashima, 5 Sun 10 Step Yosegi Japanese Puzzle Box