Make this traditional game a little more scary by filling the bobbing tub with milk and adding red food colouring. Add enough colouring until the milk resembles bright red blood....
Then add the apples and let the kids take turns bobbing for apples.
You could also use a large plastic "cauldron" rather than a bucket or tub.
This game can get messy so its best played outside if possible. If you must play indoors, put down plenty of newspaper first. You should also consider protecting the children's clothes!
Some children dont like putting their face in the water or dont want to mess up their Halloween make-up. If you think that might be a problem, tie the stems of the apples to varied lengths of string and then hang them up - from a clothesline, if you can be outside, or from a string suspended across your room (perhaps from door jamb to door jamb).
The kids should then put their hands behind their back and try to take a bite out of the apple - which isn't very easy to do! You can also play the game using strings of marshmallows.