If you're a fan of live theater productions, book yourself some seats for a play or other stage show at Southern Appalachian Repertory Theatre. Look online for scheduling details.
You're spoiled for sightseeing choice in Mars Hill. Southern Appalachian Repertory Theatre is an ideal place to begin here, but there are numerous other worthy attractions to enjoy. Dream Guitars, and Echoview Fiber Mill are not far from the arts and culture attraction and and will cap off your day nicely.