More central Ohio festivals:
Zucchini Festival in Obetz
Tomato Festival in Reynoldsburg
Pumpkin Festival in Circleville (aka Round Town)
Ice Cream Festival in Utica
Sweet Corn Festival in Millersport
Memorial Day Fish Fry in Lithopolis (my dad's home town)
That's all I can think of right now. And look, they're all food!
Oh, how could I forget my very favorite: The Arts Festival, in June, right around my birthday. Lots of gorgeous stuff that I can't afford, and of course, more FOOD.