You could use separated hot dog buns to make individual mini mummy pizzas. Mummy Pizza - All you need is french bread, pizza sauce, your favorite pizza toppings, mozzarella cheese and 2 sliced olives for eyes.
Boo-nilla shakes: melt chocolate chips and paint ghost faces on inside of glass. Let harden before you fill the glass with a vanilla shake. (OR: Draw quick ghost faces on our clear plastic cups and have milk at snack time.