Interesting YouTube Channels
In no particular order, some great content creators recommended by multiple people in the community
Robert Murray-Smith is an enthusiastic teacher of anything that interests him, and he breaks things down to pieces that are easy enough for even children to understand fairly complex subjects.
https://www.youtube.com/@ThinkingandTinkering
LockPickingLawyer is a very accomplished demonstration lock picker that thoroughly explains what he is feeling or looking for while working.
https://www.youtube.com/@lockpickinglawyer
BlondiHacks is run by Quinn, a clever engineer and machinist that teaches a lot of interesting mechanical projects.
https://www.youtube.com/@Blondihacks
MyTechFun is run by Igor, a very thorough and methodical engineer that does occasional materials testing relating to 3D printing.
https://www.youtube.com/@MyTechFun
Slant 3D is a 3D print manufacturer that teaches about the methods to design for and advantages of 3D printing.
https://www.youtube.com/@slant3d
TechMoan demonstrates and explains the history of tech items and technologies from the past.
https://www.youtube.com/@Techmoan
Stephan from CNCKitchen is a materials engineer that does some very interesting testing.
https://www.youtube.com/@CNCKitchen
SaveItForParts is a great experimenter that does a lot of radio related research and tinkering.
https://www.youtube.com/@saveitforparts
SilentButDescriptive demonstrates handcuffs and restraints from around the world.
https://www.youtube.com/@SilentButDescriptive
AppliedScience teaches a great variety of different concepts and technologies.
https://www.youtube.com/@AppliedScience
TeranAtelier is a master leather worker that teaches in a way that anyone can understand.
https://www.youtube.com/@TeranAtelier
ScamSchool is run by magician Brian Brushwood, and teaches magic tricks and other sun "scams" to play on friends.
https://www.youtube.com/@scamschool
Peter Brown is a craftsman that uses epoxy, wood, and everything else to make some real works of art.
https://www.youtube.com/@peterbrownwastaken
Tim Hunkin is an engineer and mechanical artist that creates unique "arcade" games for his public arcade in the UK.
https://www.youtube.com/@timhunkin1
TechIngredients teaches and explains the science behind some really neat projects.
https://www.youtube.com/@TechIngredients