Place graham cracker halves on plate. Put mini marshmallows on one half, chocolate on the other.
Microwave on high for 45 seconds, or until marshmallows are puffy. Let cool 60 seconds. Have kids smash halves together.
Insert licorice arms and legs, and lollipop "skull" at top (for kids under age 4, use a jumbo marshmallow - squeeze end to fit).
With icing, draw bones on graham crackers and face on lollipop.