One last idea is a running diary and breakdown of one of my fantasy football leagues. Keeping tabs on the draft, free agency/waiver wire/trade transactions, seeing who the best manager is, etc.
I am in two leagues, like an awful lot of you I'm sure. One is a league I've been in every year since 2005 or 2006, I can never remember, with a bunch of buddies from college. I like being in touch with them, but I'm not sure how much football they watch. That said, it took me until last season to win the championship.
The other league is with a group of guys from high school--most of them went to the same state college, and they invited me into the league one year. Well, I fucked up. Two leagues at a time was too much for me then, or I was just plain lazy, and they asked me to resign my position as that season wound down (2007 I believe). I got back in a few years ago, and managed to win that league last year too! 2/2 ain't bad, and these guys do seem to know their sport and are more into the league in general, which increases interest and/or fun for pretty much everyone.
It's an awful lot of data, but I might try to pull that off. Could be a handy dandy tool. And if I can keep it up during the 2020 season that might not even make it, I should be able to do it once things calm down in a year or two, right?