I think all the balls should have a number and be placed in a Kevin Lowe piņata. Then the GMs have to beat the piņata until the balls fall out at which point, they are scramble to grab one. Could make it interesting by having 7 balls instead of 8, thereby making them really have to try hard to grab one.
Then place the balls in the bingo machine and draw them.
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"A pessimist thinks things can't get any worse. An optimist knows they can."
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