Sell tickets in advance for a car smash for charity. You can also sell tickets on the day, but with promotion, you will sell more tickets when you sell them in advance on this event. We sold ours for three swings for $2 and auctioned off the chance to be one of the first three people to swing the sledge hammer. We got a car donated from a local wrecker and had the fluids and window glass removed by our auto shop. (The windshield remained because it is safety glass.) Swingers had to wear safety glasses and work gloves and could not get on the vehicle.
We raised over $250 for our charity.