When I was a teenager, I wanted to become a professional archaeologist, but my mom said that I would never make any money at it. Later, on a family vacation, we climbed an Aztec pyramid together. While my mother was catching her breath and enjoying the view, I was looking down at the stones and rubble. There amidst the rocks were about $10 in Peso notes. My first comment to my mom was "see, archaeology can pay off!"
I've worked as a professional archaeologist ever since, but have never found paper money at any other site.