Activities in the area are too numerous to name them all. These are just a few things to help you plan your trip. These are just suggestions and not an endorsement.
Smoky National Park
http://www.hikinginthesmokys.com
Ober Gatlinburg
Pidgeon Forge
White water rafting
Forbidden Caverns
https://www.forbiddencavern.com
Scenic Helicopter Tours
https://scenichelicoptertours.com/pigeonforge-gatlinburg/
Anakeesta Adventure Park
Zipline – Climbworks