Possum Badge

Possum badges are a form of currency

Background
Possum badges are used by the Pioneer Scouts to mark progression through the Order of the Possum. They are earned by completing World Challenges set by Scout Leader Jaggy at the Pioneer Scout camp. Additional badges may be earned by completing Stings and Things, Operation Tidy and Campfire Tales.

Bugs
The Musician challenge originally could not be completed, because no buildable instruments satisfy the "Build a wood instrument in a Workshop or C.A.M.P." requirement. This was fixed in the Night of the Moth update.