At the Lateran there has been a wonderful exhibit about the history of conclaves. There is a display of objects from various conclaves, including that which elected His Holiness Pope Benedict XVI. Here are a few interesting items.
First, the Cardinals have to get organized and divide up the chores. They use a system of random selection of wooden balls, each having the name and the number of the Cardinal according to precedence in the college. These are then placed in a board having indentations according to their roles.
Here you can see the little ball that Joseph Card. Ratinzger had. As Dean of the College he was #1 (and still is!).
I suppose you could say his was the Power Ball.