This is a thing 3blue1brown runs yearly for the last two years at least, and it's a great way to find new channels. It's all about mathematics, but often from engineering or art perspectives.
If any of them go over your head, feel free to fast forward, but sometimes it's made easy with just a little bit of googling, if you're stuck. But certainly don't treat these like lectures -- they're def things to chill out to or do things with it in the background with until something catches your interest.
2021:
rationale:
playlist (800!!!): https://www.youtube.com/watch?v=fJWnA4j0_ho&list=PLnQX-jgAF5pTkwtUuVpqS5tuWmJ-6ZM-Z&index=1&t=0s
blogpost: https://www.3blue1brown.com/blog/some1-results
2022:
rationale:
playlist (400!!!): https://www.youtube.com/playlist?list=PLnQX-jgAF5pTZXPiD8ciEARRylD9brJXU
blogpost/list with paper entries included: https://www.3blue1brown.com/blog/some2