I'm a HUGE fan of the equinoxes. I make May Day Wine around the spring equinox and try to wake up for dawn each May Day. Then at Autumn Equinox it's time to drink some although it's really best at the winter solstice.
I'm a lover of wine and love to be around grape harvesting. So for me, autumn equinox is about the harvesting of the grapes, celebrating what the earth has brought to life. Also, in New England, fall is full of gorgeous fall foliage so I love just driving around and soaking it up.
So for me it's about lots of good wine and fresh harvested vegetables, plus some I suppose "natural" meats like venison or turkey. It's about the feast of the harvest.