Crinkle Sounds are some of my favorite - so I had to do a Crinkle Sounds Pt. 2! Some of these items were in Pt. 1 and some of them are brand new. So, I hope you can relax and enjoy!
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