Japanese Change Trays
They are also in use in Germany and it never occurred to me that they may not be used all over the world. They are called [Zahl|Wechselgeld][teller|schale] [1] which translates to [paying|change] [plate|bowl]. They can not be found in every shop but probably in the majority. Some people use them, some don't. And it is more common to present the change in them than the payment. The obvious purpose is of course to easily be able to see that the amount is correct while avoiding escaping coins. They also often show ads, nowadays on displays. And nobody moves them around in Germany, they just sit on top of the counter.[1] http://de.wikipedia.org/wiki/Zahlteller