There are a number of haunted attractions in the Nashville area, but I haven't been to many of them due to the price of tickets. When you are trying to pay for a family of four or five, those $15-$20 + tickets can really add up. We may try to do one this year.
Most years I go to the city parks & rec carnival, which includes a haunted hayride and is quite inexpensive. Once or twice we've done the corn mazes, and my husband says he'd like to do that again this year. We lean toward doing things like ghost tours, though, because they cost less and are often intertwined with local history, which is kind of neat to learn about.