POUR 1-1/2 cups cold milk into large bowl. Add 1 pkg (4-serving size) Jell-O Vanilla Instant Pudding. Beat with wire whisk 2 minutes. Gently stir in 2 cups Cool Whip Topping.
SPOON mixture into large resealable plastic bag. Close bag tightly. Snip 1/2-inch piece off one corner of bag. Holding top of bag tightly, squeeze mixture into 6 small (7 oz.) clear plastic cups or glasses to resemble ghosts. Create a "face" with decorating icing and candies.
REFRIGERATE until ready to serve. Store leftover desserts in refrigerator.