Ask HN: How did you meet other motivated, interdisciplinary people?

I'm currently a grad student getting a STEM degree. Most of my friends are also in the STEM circle, and this is nice on a technical level, but I am no one else seems to take an interest in books, film, art, etc. Not to sound like every self-help book, but I do enjoy living holistically and balancing creative and technical disciplines. How do I go about meeting people with potentially extremely different mindsets and values from my STEM friends?