Human ingenuity knows no bounds. The same could be said for the human love of beer, although of course we would never encourage such a practice.
In 2005, the African country of Cameroon experienced an unusual currency situation.
A local brewery started to print prize offers under beer bottle caps to boost sales.The prizes included mobile phones, luxury cars and (most commonly) more beer.
Competitors began to create similar bottle caps. These bottle caps eventually became so commonplace that people then started using them to pay their taxi fares (a single bottle of beer cost about as much as a taxi ride). Taxi drivers then used them to bribe the traffic police.
Human ingenuity at work.

