I still have to work on mock-ups, but I'm not that good with Photoshop. Here's my favorite owl image I found:
With the exception of the yellow chip, denominations could go where the AOE lettering is. This image would be on all the chips, with perhaps a different image on the back of the chips. I would prefer not having a white background for the inlay, so that works well with this image too.
Here's an image of Hercules I like, but don't know if it would be fitting opposite the Athena owl:
Finally, here is a link to some Greek god images if I wanted to go with 8 different sets of artwork:
gods link