I'll be within a short distance to Columbus/Dayton August 4-15 for a class.. well, about 45 minutes west of Dayton.
Another idea is Indiana Beach, which is like the funnest place ever, has buy one get one tickets if you have a CVS coupon. Imagine, a haunted mine ride rollercoaster where you actually get lifted up in an elevator, one with a 120 degree drop, or another with no restraints. It's super cheap if you don't want to ride rides, parking is free, you can purchase a beach pass without rides, or even pay by ride. They also have really yummy tacos. The only problem is it's location- western Indiana.