So instead of praying to the god of travel you pray to the patron saint of travel? What other activities have patron saints?
That's the way it worked! The pagans had gods for this and gods for that and with Catholics it's saints for this and saints for that. A god over a city became a saint over a city.
Just think of anything and there is a patron saint of it.
For example:
St. Roch is the patron against plague, cholera, and skin rashes and typically devotion includes prayer cards and St. Roch Medals.
Furthermore, he is the Patron of Dogs, and 15 cities/towns in Italy.
https://www.catholiccompany.com/blog/saint-roch-patron-saint-dogs