are You a member of any type of national club. The Elks allow camping when available in their facilitys if you are a member.Maybe some others do too. A church parking lot with permission and maybe a $10 bill? Hospitals. Just make sure you park where no one can park you in or prevent you from hitching up again. Happened to me in a state park. Told to park "over there" and plenty of room and some smart arse parked right in front of me. Had to wait until he came back from fishing. Rangers told him in so many words that he was an ss.