Tell everyone you're going to auction
off a buck
. Then say that to pay for expenses the second highest bid will have to be paid anyway. And everyone should say "Fine, cool, get on with it."
Bids will fly. 1 cent. 2 cents. 7 cents. 15 cents. 24 cents. 46 cents. 49 cents. 50 cents. After a while, it becomes evident that unless they win the buck, they'll have to shell out some change. Which no one particularly wants to do, so the bids climb. 60 cents. 70 cents. 80 cents. 90 cents. 95 cents. 96. 97. 98. 99.
Pause, while it sinks in that it would be better to earn nothing than to pay 98 cents.
Another pause, while it sinks in that it would be better to pay 1 cent than 99 cents.
1 dollar and a penny!
And so on until someone either gives up or falls asleep. Either way, you end up with a lot more money than you started with.