Ask HN: What can I do to make sure that I don't lose my coding skills

I studied computer science and did a couple of software development internships as a student. I love programming and building stuff however less than a year after graduating, I'm working in marketing for a tech company and writing code is not part of my job description. These days I hardly write code and it eats away at me. What can I do to make sure I don't lose interest in coding or lose my coding skills?