>at the same time, youtube is really bad at exposing you to new channels that you would enjoy. they bombard you with similar videos ("here's 15 more toilet seat review videos for you!") but they're not able to extrapolate channel tastes for some reason. it's left largely up to the user to dig around for collaterally-themed channels.

This is exactly why I am working on a team to create alternative YouTube recommendations. Our algorithm is designed to surface smaller more obscure but relevant channels.

Search a channel to get a list of channels making similar content. Our recommendations for Project Farm include other tool review channels like A Concord Carpenter / Toolboxbuzz and Thrifty Tool Shed. Click through to A Concord Carpenter's list of similar channels also reveals Tools & Stuff. Thrifty Tool Shed is a great example of a very small yet relevant channel that the algorithm surfaces (~15k subscribers).

Our list of channels similar to Project Farm:

https://channelgalaxy.com/id%3DUC2rzsm1Qi6N1X-wuOg_p0Ng/

Of course there are dozens more channels on PF's list that are about more general carpentry, metalsmithing, and home-engineering projects. And you can use the search bar at the top of the page to search any other channels you watch to get their similar channels lists.