@sydneyw obviously the # were already mentioned. There are loads of them and they'll fill your timeline while you are figuring out who to follow and build your interactions with people.
Some of my favorite are to do with books (#bookstodon) and #gardening, #bloomscrolling, #foodforest but definitely also #carryshitolympics and #dogsofmastodon or # leaning into activist or politics.

Goedemorgen winterwonderland!
#winter #zonsopkomst #sunrise #sneeuw #snow #snowmageddon