In 300 years, if you were to be named the patron saint of X, what would you like X to be? Places, activities, objects — all are fair game.
First one has to become a saint, which is not impossible but is not easy either. While I believe everybody can aspire privately to sainthood, I know that being recognised as such universally is another thing. Besides there are already patron saints for almost everything.
For instance, the patron saint of journalists is saint Francis of Sales, a French who was bishop in Switzerland in the XVI-XVII century. It seems that in a stage of his life when nobody listened to his sermons, he decided to make copies by hand and slipped them under the doors of the houses. He also wrote numerous letters and composed a book with them with advice for lay people about how to reach sanctity. He is patron saint of Journalists because of those writings.
I guess it would be great to have a modern journalist as a patron. A more present-day model. But for that we need a journalist saint and known for that. Not me. I’m sure there are more than one out there, unknown, and some day we will have a journalist as a patron.