If you can get out on the lake, you should. It’s a gorgeous lake with scenery unlike much of the rest of the state.
The Clinch River right below there is a world class trout stream. Even if you’re not a fly fisherman, a light spinning rig with some rooster tails is a lot of fun.
The old downtown strip in Clinton is worth an hour or two. They’ve managed to take what by all accounts should be a depressed small town and revitalized it with a critical mass of antique stores and shops. It’s not generally my thing - but I almost always leave with something when I get pulled down there after family gatherings.