Today I will be tapping on you, and the 3Dio with some objects (a quartz crystal, pen, mechanical pencil, crochet hook, graphite "lead" and stitch markers)! The sounds are sort of randomly dispersed, so no time stamps, but for the most quiet sections, check out the last half of the video.
To listen while using other apps, switch the player to Picture-in-Picture (PiP) during playback — it keeps playing in a small floating window (the screen stays on).
To listen with the screen fully off, in-browser playback stops by YouTube's design. Open the video in the YouTube app to keep listening where background playback is supported (e.g. with YouTube Premium).
Open in YouTube app