I was just looking for a good 'earthrise on the moon' wallpaper for my laptop and decided that if I ever come into a large sum of money, I will spend it all just to pay for a passenger's ride to the moon (since we're apparently going back by 2020).
If you were given $X and were allowed to drop all of it - all at once - to finance one action, what would you do with it? You can't keep it and you can't invest it. You've got to either buy 1 thing or give it all away.