The Bible is full of men and women who made a difference and the difference they made has been preserved, not in clay but within the very words of God.
I recently came back from the Berkshires where I took the family to visit the Berkshire Museum (http://www.berkshiremuseum.org/
) A part of one of the exhibits is a piece of fossilized clay that has the foot prints of a small dinosaur still visible. I couldn't stop looking at the piece of clay. Here was a set of prints from a creature that had lived millions of years ago.