Bobbing for apples? Maybe in a bucket of styrofoam peanuts instead of water. When I was a kid, we did what
@Brat said, but the noodles and grapes were inside a 5 sided box with a hole on one side for a small hand, with parent on the open side guiding the small hand to the "brains." Party city may have a Halloween version of pin the tail on the donkey. Musical chairs. Something like duck duck goose with Halloween icons, such as cat cat witch.
Have fun! You are brave. 4951