I have someone that is trying to make something nice for a current employee at the Tropicana here in Vegas. They were looking for something that isn't just a chip, something that is unique and you probably wouldn't see anywhere else that isn't too large, but something that could probably be hung on the wall in a display of some sort.

One thing he is looking for is a Tropicana $1 token with Folies Bergere on one side:

(picture via ChipGuide)

Anything else like a Silver Strike or something similar would also be of interest! If you have anything please shoot me an email and I'll forward it to see if that would work!