I like lists of things, because I feel like I get comprehensive overview of Interesting Stuff without having to do the work of searching for it all myself. And it’s currently List Season so it’s a good time to put up a community dedicated to them.
The obvious “best of” lists tend to center on books, music, movies and other media, but you can use it for anything. Best Lemmy communities, best 1990s nickelodeon commercials, etc.
I am so there with you RE: best of lists. They always give me a chance to expose myself to cool things that might have flown under my radar throughout the year.