If you work for a large company, or a well-connected small one, you should investigate if part of your benefits package includes any unexpectedly awesome free shit.
Many companies act as corporate sponsors of local theaters, symphonies, museums, zoos, sporting teams, and other cultural institutions, and their patronage can translate to free or discounted tickets for you.
This is also the case for many colleges and universities. Whether you’re a grad or undergrad, the right student ID can equal discounted membership, classes, and admission to any institution your school partners with. I regret not taking advantage of my college’s generous museum consortium membership more often when I was a student. (To be fair to myself, I had just discovered alcohol. So. Mm-hmm!)