Not many State Parks close to Cosby but there are a number of campgrounds, mostly toward Gatlinburg. There a number of campgrounds in Pigeon Forge also but the traffic in and out of there can be a bear.
There is a Walmart just north of Cosby in Newport that you could overnight at.
There is Panther Creek State Campground between Jefferson City & Morristown, that's probably the most convenient that will still be open.
What routes are you taking???
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