Jello Worms - Tie a bunch of straws together. pur gelatin into straws. let it sit over night in the fridge. take the straws and let gelatin slide out AND THERE YOU GO! You have jello worms! How to Eat Fried Worms. (Maybe jello shot worms.
Dracula's Dentures - made from chocolate chip cookies, red frosting, and marshmallows. I'd use homemade chocolate chip cookies (or Enjoy Life cookies), Dandie mini marshmallows, and India Tree natural dyes to make red or pink frosting.
For Cinco de Mayo in Kdg. - Plastic egg maracas - plastic easter eggs, fill them with what you want (candy, beans, etc.) 2 plastic spoons, wrap in colorful duct tape or plain masking tape and hand decorate.