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 Mega Percussive Synthesizer designed by Thomas Henry built by Hesed, BingBong mini synthesizer + Fuzz Noise Filter - D.I.Y., BUMMMSsss - DIY Analog Drum with Trigger