Boondollar

Boondollars are the currency earned by climbing rungs on the Echeladder. They are the currency used throughout the entire Incipisphere. Their symbol is a Greek "Beta" with two lines crossing through it. They're stored in a piggybank-esque container called a Ceramic Porkhollow. 1 million boondollars equal 1 boonbuck.

So far nobody has discovered any possible use for them.