Here are some ideas:
1. Mix peanut butter, corn syrup and food coloring to create edible, stainless blood.
2. Use zip lock bags to make blood and vomit packets.
3. Fill gelatin heart and brain molds with blood packets.
4. Fill a hallowed egg with fake blood to throw against a wall or break over a head.
5. Use celery to create "bone breaking" sounds.
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