Mine would be the time my dad rigged a harness and “hung” himself from the carport beam, dressed to look like a stuffed Halloween decoration. He would grab at the bigger kids and parents when they came up to the door for candy. Scared the living bejeezus out of them.
My wife and I used to get hot chocolate and visit every spirit Halloween in our state. Later on we got married on Halloween. So those two together are really special to me