Jim took Ryan and I and Ryan's cousin and his dad to Tony's Tube World today! It was a blast snow tubing in 55 degree weather. For 20 bucks you get an hour and a half on the slopes.
They have a conveyor belt on the left side that lets you ride back to the top. It's a life saver.
An hour and a half drive from Knoxville, its located in Maggie Valley North Carolina. It's worth the trip.