Inspired by the US Powerball lottery that today has a jackpot exceeding five hundred million US dollars, I was pondering, and thought OT might have some interesting ideas. Hypothetical: You played the lottery (even if you don't play lotteries, you were given a ticket as a gift) and your ticket is the only winner. You cash in the ticket for a half-billion lump sum, screened by law and accounting firms so the public will never know you won. After taxes are taken out, you set up all your children and grandchildren with college funds, buy the mansion/yacht/whatever, spread a few million around among your friends, and generally set yourself up for a life of luxury as you wish. You've still got over three hundred million left over, though. What do you do with it?