One of my favorite YT channels is OH8STN Ham Radio also known as Survivaltech Nord. Julian is my spirit animal for lightweight field communications. If you’re not into ham radio you probably won’t enjoy it, but Julian is practical, direct, and drama-free.
For concealed carriers looking for excellent analyses of critical incidents, Active Self Protection is the gold standard YT channel for that, IMO. Not quite sleepy, but crisp, concise and all about avoiding trouble wherever possible.
The Outdoor Gear Review is one of my favorite hiking/camping channels.
I bought a new generator recently and probably spent many hours watching videos about my specific one and how to fix various maladies it may develop. No particular channel to recommend but a deep dive into this proved to be both educational and enjoyable for me.
Yesterday I found a YT video on troubleshooting problems with an in-fridge water dispenser, and was able to fix ours without spending a dime or waiting for a tech to come out under warranty (one of the kids accidentally set the ‘fridge too cold and the water filter froze up).