SHOW OFF YOUR TELEPATHIC SKILLS!
In the collector's case, you'll find the Telepathic Tube and cap with a red, a white, and a blue rocket. With your back turned, ask your spectator to take a rocket of their choice and place it into the tube. You'll then use "telepathy" to tell what color rocket is inside without seeing inside the Telepathic Tube.
IF THE BRASS TUBE FEELS BALANCED, THE ROCKET IS WHITE.
If the brass tube feels heavier toward the back, the rocket is blue.