Make cupcakes according to box instructions.
Let cupcakes cool and then frost one at a time.
Place chocolate cookies in a zip lock bag and crush with rolling pin or meat mallet until they look like course dirt., then pour into a bowl.
Frost cupcake and then roll into crushed cookies. Place back on rack.
Cut your pipe cleaners so you have two 5 inch long pipe cleaners for each cupcake and if you want hands, two 1-1/2 inch pieces to attach for hands.
Cut the marshmallows in half, one piece for the base and one for the head. Draw a face on the marshmallow head and set aside.
Poke one 5 inch pipe cleaner through a marshmallow half, poke all the way through and into the cupcake so it stands up. Carefully thread 4 white pretzels onto the pipe cleaner for the body and then wrap the other 5 inch piece of pipe cleaner twice around the neck are and extend arms.
If you want hands, at this point twist the 1-1/2 inch pieces around the ends of the arm pipe cleaner and spread it out to look like fingers.
Carefully place the face/head onto the top of the pipe cleaner to complete your skeleton. So cute!!