Yesterday at Binion's I was shocked to find non-standard, commemorative chips floating around the table. Last time I was there was March 20, and none were in evidence then. In fact, the reason the discovery was so surprising is that Binion's has been one of the few holdout casinos, never issuing any special chips (as far as I know) during the almost three years I've played there. (The remaining ones that I can think of offhand include Wynn, TI, Bill's, and a handful of locals joints.)
Apparently some genius in upper management realized that they could have these things made for about a quarter, and sell them for $5, and that doing so might create a bit of profit. Since Binion's isn't even able to make their rent payments lately, this was probably a good thing to finally figure out.
Now they just need to get somebody to work on making their new-issue chips less, well, goofy-looking.