My grandad lived in Knoxville, TN, so we always used to go visit him and then take a drive over to Chattanooga and spend the day there, mostly at the aquarium. Nashville was a super memorable trip for me, just roaming around not really knowing where to go and stumbling into the Johnny Cash museum (Iโd definitely recommend) and a bunch of great restaurant. Would definitely recommend driving around the state during the springtime when it gets a little warmer.