[Alas Babylon!]

Here's one:

I'll bet all the Çatalhöyük Chicks really dug it!

[SunkenCiv]

The first time someone made one of those or found a naturally occurring one, he got laid when he got it home. That’s probably what produced the trade revolution that drove Neolithic growth, and that created the world in which we live today. Oh, and prostitution.