It's called the "Focus Ring" because a team must focus their attention to succeed in this teambuilding exercise. The goal is to transport a ball from point A to point B and then set the ball on a pipe.
Set Up/Preparation: Each person in the group holds on to at least one string (depending on the size of the group, some will have more than one string). The participants spread out like spokes of a wheel, holding on to the end of their string. A tennis ball is then placed on top of the steel ring.