We have a windshield cover, they work great when it's dry outside and not freezing. We have a very rickety privacy curtain that goes around inside, works just fine when we are in a private site where passers by don't go that way. The best we have is a homemade heavier duty curtain that I put up on two knobs that stretches across the back of the class C chairs. It tended to droop and leave a gap, so I bought magnets with holes through them, screwed them to the wall, and put it's mate into a cloth. Now we hang the curtain, put the curtain string up between the magnets, and have no gap. We also use magnets in our garbage can and on the wall, it's strong enough to hold it, but easy to pull off. And we have them on the bathroom door too. It holds the door in it's open position without having to jam it.