I'll start this off with one I just found, and subscribed to, tonight.
https://www.youtube.com/user/FloweringElbow/Guy is English. Excited about upcycling, making, hacking, etc. A very broad range of projects.
Is humble, and wants to be helpful.
Kid really deserves a lot more subscriptions than he has. (Still less than 4k, and he's been around for 9 years.)