Hold the trap in your non-dominant hand. With your dominant hand, pull the plunger until it clicks (or reaches the top). This "sucks in" the thin Halloween air. Visualize that you are inhaling all of your anxiety, bad habits, or a specific spirit's confusion.
Now it's time to add a spooky theme to your piston trap. You can paint or draw a spooky design on the cardboard or foam board base, or add decorations such as plastic spiders, skeletons, or ghosts. Make sure the decoration is securely attached to the base and won't interfere with the piston mechanism. Hold the trap in your non-dominant hand