Just in my immediate area I could go to (when they're being held that is):
A peach festival, a garlic festival, a chocolate festival, the state fair which is like a giant stereotype all of its own, an apricot festival, a Sturgis satellite thing, classic car festival and tribute to American Graffiti fucking up traffic downtown, and so many more I haven't personally been to or even heard of, I'm sure.
We celebrate everything because then we have an excuse to party.