Water On The Moon
From what I hear, you can never have too much water. While we may be facing more than we need soon if global warming (natural or otherwise) comes about, the Moon and its future inhabitants are a bit short at the moment.
Of course once you get a decent base set up, you can ferry craft off the moon’s surface much easier than from Earth. Go grab an asteroid or two composed mostly of ice and melt it up there. Mmm good.