Last year they had a really cute one that was a carnival on the school field. It was a ticket per game and the tickets were $1 each. If you volunteered to run a booth for an hour you were "paid" with 10 tickets. So most parents would run a booth for an hour, then go play for the rest of the time. It was not a huge money maker, but it was lots of fun. They also gave out 10 tickets to each of the kids on the school lunch program, so that everyone could come.
There were the usual carnival games, like making a basketball score, knocking down the milk bottles, beanbag toss, etc, etc. There were also a few I had not seen before such as a hoola hoop game. There were quite a few donated little prizes if you won, but the kids really weren't into that part of it. There were also hot dogs, corn dogs, lemonade, hamburgers, popcorn and cotton candy for sale (I think this is where most of the money came from).
Then for the last hour there was a family dance on the basketball court. Everyone danced under the stars and the rule was one kid song for every adult song.
It was not that expensive to put together, except for renting the popcorn, cotton candy and buying the food stuff. Most of the games were things that some of the handy moms and dads built and were things that could be used again. There were a lot of red and yellow balloons and streamers around and they did splurge and get a big balloon arch to lead into the area.
It was cute, fun, very enjoyable family evening and I think they made a little bit of money. Can't beat THAT with a stick!