Its funny but its good. You can collect them from money. Cause when You collect all Kronkorken of Your beer and then u ll bring them to the trader, he ll give You money. More money You can earn with special Kronkorken. Cause like stamps and coins, many people in the world collect Kronkorken. Its the same situation like collecting bottles or Bierdeckel or Simcards. All collectors have fun and they are rich or they ll be rich. And every day is fun cause You have a new toy in Your house. And every beer You drink, You earn money. So we have in our neighourhood a beershop. And he is offering more beer than any shop in the world. So every day we can buy another beer and so our collecting of Kronkorken ist growing. Also the are used for gambling. But the main thing, Kronkorken become expensive like stamps. Not every Kronkorken, but the best ones. 300 USD are paid for Kronkorken or more from Gibraltar or any other interesting country. There are some Thousands of Kronkorken in the world and a collector can call his own from 200 countries. Worldwide there are events where the collectors buy and sell Kronkorken and they earn money by finding diamonds in the world of beer.