If you’d like an Egyptian-themed set, create your own custom chip designs. Egyptian symbols and imagery are widely available in both free and paid formats. You can mock up a few concepts and then have a designer finalize the artwork.
Damn, I got excited for a moment then saw that this won't go forward. What if we offered him a per chip royalty? 50-75¢ a chip would still make these more affordable than the secondary market for the old ones.