Heres a bunch of random shit that i like. It’s not in a particular order but i did attempt to sort them by related concepts.

Stuff Made Here - Engineering projects
SmarterEveryDay - Engineering deep-dives
Practical Engineering - Civil engineering stuff explained
Steve Mould - Engineering concepts
Kyle Hill - Science communicator
PBS Spacetime - Space stuff explained
Answer in Progress - Channel looking for answers to questions?
Disrupt - Dark software explanations
Driving 4 Answers - Automobile/engine theory/explanations
Integza - Amateur rocket enthusiast/projects
Major Hardware - PC fan concept testing and misc
SuperfastMatt - Car and other projects
Vice Grip Garage - Man rescues garbage classic cars
2Stroke Stuffing - Man tries to build two stroke land speed bike
RCTestFlight - RC projects (mostly boats/planes)
Beau Miles - Aussie who runs and stuff and random stuff
VC Adventures - Vegan Cyclist bro
Rapha Films - Pro cycling team adventures
This Old Tony - Hobby machinist
Drawfee Show - Artists doing themed art challenges
Adam Neely - Jazz bassist theory/explanations
Exurbia - Uhhhhh… Story creator/philosophy enthusiast?
Gbay99 - LoL documentaries
Any Austin - Video game investigations, kinda?
Let’s Game It Out - Gaming entertainment
TomatoAnus - Speedruns explained
Joov - Skyrim challenges
EdgeOmega - Skyrim challenges
Rekrap1 - Minecraft content
Rekrap2 - Minecraft content
Evbo - Minecraft films
Ogmoe - Minecraft manhunt god
BayAreaBuggs - GTAV RP
JANTSUU - GTAV vehicle testing

This is just a sample. There is much more good shit out there that i like.