It is not well known, particularly those who do not live in Las Vegas that there are more Catholic Churches in Vegas than casinos. It is not a surprise then to learn that some worshipers at Sunday services will drop casino chips in the collection basket. Since they get chips from many different casinos, the churches have devised a method to convert the chips to cash.
The churches send all their collected chips to a nearby Franciscan monastery for sorting and then the chips are taken to the proper casino to be cashed in. This sorting and trips to the casinos are done by the chip monks.
Didn't see that one coming did you?