Hold the pipe cleaner in the middle. Bend the two halves together so they run parallel, then fold the top 3 cm over to form a rounded loop: this is the ghost's head. The loop should be about 2 cm in diameter.
Twist the two strands below the head loop together for about 2 cm to form a neck, then split them apart and spread them outward like two arms, bending the tips of each arm into a small curl so they do not catch on anything.
Bring the two arm strands back together at the body level and twist them together for another 2 cm to form the body, then let the remaining length of the pipe cleaner hang free as a loose skirt or loop it into a ring that fits over a finger. Bending the lower loop to fit over the fingertip holds the puppet in place during play.
Use the black marker to draw two tiny eyes on the rounded head loop and a small curved mouth below. The faces will be small, but they read clearly at close puppet-show distance.