Tbh I get a lot of hyperfixations and they tend to be pretty fleeting as well. For example there was a 6 month period three years ago where I kept trying to learn a new language. Completed a duolingo course on Irish, made some progress on the Greek and German one, and sampled a whole bunch of others as well. Not that I have any proficiency in any of them at all.
I also have had a few periods where I get obsessed with movies and get really invested in the Oscars. Not to the point where I would throw a hissy fit if the movie I wanted didn't win but I would get pretty invested.
I can also get fixated on a certain TV show and try to watch all of it (Breaking Bad, Criminal Minds, Simpsons, The Wire and Sopranos are all shows I've had a hyper fixation with at some point)
I can also get really invested in political developments like elections and protests.