- Apple Drains: About yard drainage installation/design/ideas.
- ChrisFix: Posts rarely but extremely high quality car repair/maintenance videos.
- City Beautiful: Talks about urban design and how it may be improved for people (a little anti-car, pro-public transport).
- Doug DeMuro: Sometimes has unusual or quirky vehicles.
- FortNine: Fascinating motorcycle channel even though I don't own, have ever owned, nor plan on buying a motorcycle (yes, I know).
- Mentour Pilot: "If Air Crash Investigations was done by an actual commercial pilot."
- Practical Engineering: What you think it is from the name. Rarely posts, always worthwhile when they do.
- The B1M: Looks at civil engineering projects.
- Project Farm: One of if not the best review channels on YT.
- Technology Connections: Interesting "deep dives" into every day technology.
- Tom Scott: Science adjacent channel that often looks at quirky locations.
Those are the "biggies." I have others too, but they're far too niche to list here.