To continue coding in your spare time, you must have a real exciting project to work on: to learn a new technology, or to build something you really love. Without that passion, you won't have the extra energy to do that and it won't necessary to be beneficial.
So try follow your passion. If your passion is to write a novel, play guitar, do that. If your passion is to build a new web app, do that. Don't code just for the sake of coding. You cannot lie to yourself.
So try follow your passion. If your passion is to write a novel, play guitar, do that. If your passion is to build a new web app, do that. Don't code just for the sake of coding. You cannot lie to yourself.