I like to use 6 to 8 teams with 3 or 4 in a team. Whole bunch of tennis balls with numbers 1-6 on them. Orange lacrosse balls for the powerball. Apple trays are from the school kitchen. Great way to recycle/reuse.
First person must get the #1 ball, once it is on the tray then the second person finds the #2 ball, once it is on the tray the 3rd person will repeat the process. The last ball to be found is the orange powerball.
I have been playing this game for over 15 years. Kids love it. I use it as a Field Day Game for all of my grade levels.