Those are all over near me. Not even neccisarily near the camp grounds. Its just rural.
We also have tons of unmanned farm stands. All honor system. Usually a little metal cash box that’s not even tied down. Or a coffee can.
One of the neighbors actually managed to rig up a little fridge for their egg stand. So its a little wine fridge with an old letter box screwed to the side. Standing on an old iron cafe table. With a beach umbrella mounted over it. $5 bucks a dozen.
There was a guy who sold lobster and clams this way to. Just a cooler parked at the edge of a farm field, at the nearest intersection to the dock. No one around but the deer. Think he retired though.
You tend to get better eggs and apples from the little stands in my experience.