It shocks me when I hear a parent tell a child that they can't have something because "that toy is for boys" or "that toy is for girls." Until we get to a place where stores no longer divide toys by stereotypical gender norms, take your kid down the "pink aisle" and down the Lego aisle, Marvel aisle, and toy car aisle. Explore all the options and see what your child is drawn to, see what they enjoy. Don't let stereotypes and social constructs determine what your child *should* like, go with what your child *really* likes.
The same goes for books, clothes, and activities. Support your child in discovering what they like, don't tell them what they are supposed to like. Following your child's lead helps you learn more about your child and your child to learn more about who they are and who they want to become.