Thanks Scott!
I found the squish-penny machine last week at the Riviera purely by accident...it's tucked away in the small hallway leading from the North side of the casino out to the pool (and is known as the short cut to the Monaco Tower). Poor thing looked sad and lonely - so I fed it!!!
I'd like to collect more of these, so your info sure helps!!
I also went into the ABC store on Fremont St. and noticed they have black wallets (size of a passport wallet, maybe 6 inches wide by 10 inches tall ) that have special slots designed just to hold the squished pennies....I think it was $4.95.