12v clip-on fans that I've bought cheaply at WalMart have been
great in my camper. I don't know if I randomly bought the only good ones or if the reveiws are wrong. They're quiet, move a lot of air, and stay pointed whichever way I point them.
IIRC, they look just like this, including the switch on the looooong cord:
Maybe in a little while I'll go out to the camper and get brand/model info.
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