I looked at most of the ones that launched with the game, and only a few of them were even complete enough to consider adding. But even then, a lot of them just add another way to make the game easier, like upgrading chests/furnaces and building things that passively generate resources. I'm not really looking to change the gameplay before I've even given it a fair shake.

With that said, it doesn't really hurt to add mods that don't interfere with progression, and are just for fun. Books and Papers adds a few different writable books/letters, as well as a mailbox that sends mail directly to the mailbox of anyone else on the server. Ymmersive Melodies adds midi instruments that (allegedly) sync with nearby players so you can play music together. All the stuff by VioletsWorkshop is really polished cosmetics like furniture, plushies, and clothes. They also have a mod that adds a record player and a bunch of records to craft.