Cleveland-Akron towpath camping.
I've seen this come up a couple times before, and the Summit County Metroparks is trying to listen. There's a new self-registration campsite at the Big Bend trailhead between Cuyahoga Falls and Akron. They're trying to keep it limited to hikers and bikers so publicity is limited. No fee, 4 people max, one night only, so if you know anyone looking, camping is finally available directly on the towpath. Sign up sheet faces the woods next to the restrooms, you'd never notice if you weren't looking.