https://www.stockholmsbokhelg.se/
Like the record store day, Stockholm bokhelg are events all over the city. Comic Book Convent at Kulturhuset, Nerdparade with Cosplayers in Old Town, Authors Q n A's, how to write crime fiction lectures. Bookstores, Hotel loby's, Street corners, wherever.
I will post Pictures from the event when been to it.
Also Norrtälje will have an event as such. In the red painted book store.
https://www.svb.se/nyheter/bokhandeln-fixar-ny-festival-i-norrtalje