How do they relate to your primary content? I am a cooking channel, for example. And, over the next year, I plan to make some content about growing herbs and some indoor veg, which will link nicely into cooking because they are ingredients. I am also thinking of exploring preserving techniques too since I'll have fresh produce, but again this is highly related to my primary topic.
It seems like you are trying to check all the bases, rather than expand logically from your core content.
I'm not saying that this is a bad thing necessarily. On my channel, I don't think people are watching for me but rather they are there for the things I do. If YOU are the draw for your channel, I guess it will matter less.