The Propeller hat is an item in game which is basically a multi-colored cap with a propeller on it. If you get it you will fly slowly up for a short period of time. It boosts you higher than Spring or Trampoline, but not nearly as high as Jet Pack or Rocket. The Helicopter gives you 2000 points. If there is a monster above you, the propeller's blades will cut it to shreds.