Ober Gatlinburg is a fun little place to check out. It's like an 80s time capsule up there. It has an ice skating rink, arcade, mountain coaster, animal exhibits, food, and a ski lift up to the top of one of the mountains to give an amazing view. I'd really recommend it honestly!
There's also The Island at Pigeon Forge of course with a lot of shops and mini attractions to check out.
From what I remember Pigeon Forge is full to the brim with tourist trap locations. Overall though, there is a decent amount of stuff to do if you do a little checking out online beforehand.