The not-for-profit, American Friends Service Committee, is asking young people just that, via a video contest.
One of the founding principles of the organization is peace. That's why they're balking at the price tag U.S. taxpayers are paying for the current two wars abroad. (The bill hit $1 trillion in May of 2010.)
The official contest has ended but winners will be announced on Monday, Martin Luther King, Jr. Day. Check out one of the submissions below and view the rest here.
What would you do with a trillion dollars?