Halloween spider decoration super easy and inexpensive= crepe paper and balloon. I added a smaller balloon (same type- just less air in it) for a head. next year I'm gonna add a red X made from crepe paper on it's butt.
Especially if you do a Pinata, then each kid can have one or you can make goody bags out of them. I bought plain white bags at the party store and drew on the mamy faces of Jack with a sharpie. Nightmare before Christmas goodie bags