Our HOA dues. They're only about a dollar per day, and they help maintain a pool we could swim in if we ever bothered to go pick up our updated pool key. Supposedly they also help the neighborhood "look nice" and "increase the value of our property" too. But I'd rather just keep my $1/day. To be fair, I didn't mind so much when we had a little kid and occasionally used the pool. But they still "feel like a rip off" ... and are cheap.