A visual mystery! Two red silks and a blue silk are hanging from a pole. At your command, the blue silk jumps between the red silks! Then each silk is freely removed from the pole- no threads, wires or gimmicks!
 
Since all the silks are removable, you can replace them with silks of your choice to create a specific theme, such as using blue and yellow silks for a Cub Scouts Blue and Gold theme.