I'll start:
Reading - I am just finishing 新参者, a Japanese murder mystery with a good Mandarin translation. Recommended for people who like traditional mysteries and who have a few Chinese novels under their belt already.
Watching: I just finished 漫长的季节 and highly reccomend it. Certainly one of the best Chinese shows I've watched and also just generally one of the best shows I've watched so far this year. Advanced/upper intermediate learners should be able to watch this one with Chinese subs.
Playing: Honkai Star Rail - I don't usually play mobile games, but I really like this. Lots of original Mandarin voiced dialogue, and it's an RPG in a space opera setting. I'd say advanced learners only for this one, but other learners may still get a lot out of it with English subs and Chinese audio.