Literally anything that you enjoy. There are no books you should read. Are there books considered literary classics which are enjoyed by a lot of people? Yes. Are you any less of a reader or an enthusiast if you eschew or just simply don't like the books? No.

Reading is fantastic. I am constantly adding new books to my collection, and I read them all. But they interest me. I would suggest any of these to someone if I knew them and thought they may enjoy them.

Read for you, not for anyone else.

Unless you have kids, then you're constantly reading the same Bluey book over and over.