Years ago, I stumbled upon this story on the internet. In the original story, a college professor uses a mayonnaise jar, some golf balls, pebbles, sand, and coffee to make a point to his class about time management. I doubt the story is true, but the message is more relevant today than ever before and I liked the simplistic way it was presented...plus, I felt it might make a decent video. I hope my video rendition doesn't come across as preachy (that wasn't my intention), and that you find it relaxing and the sounds interesting.
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