All time audience pleaser! Display a wooden rod with two red and one yellow silk hanging from it. The yellow silk is at one of the ends. You tell the audience that the yellow silk is acrobatic and it can jump from one place to the other. To demonstrate this you pass the rod behind your back and now the yellow has jumped to the opposite end. Repeat this a couple of times, each time the yellow silk jumping to the opposite end. The audience realize that you are fooling them by simply turning the rod around. After some by play you apply a magic spell and the yellow silk instantly and visibly jumps to the middle, right in front of the eyes of the audience. Great fun! NO Threads to worry about! (colors may vary)