So, do something else.   :-)

Some actions that are immediately obvious, to readers of ET - (and probably nobody else):

1.  Greek government starts paying it's bills in "Tallies"

2.  Make the "Tallies" be the only form of taxation accepted by the government

3.  Rehire all the government workers who have been laid off and pay them in "Tallies"

4.  Institute a significant infra-structure repair & build and pay those people in "Tallies" as well

Problem is Greek has been running a Current Account deficit for years ... if not decades.  "Tallies," being internal to the Greek economy, can only go so far as a means of exchange for imported (external) goods and services.  From what I can gather, the Greek macro-economy imports ~$69 billion worth of 'stuff' more than what it exports; a large percent of that being oil.  (How much?  Don't know.)  

BUT ... in theory ... "Tallies" used for alternative energy infra-structure build would lower oil imports by shifting electrical energy production from oil to wind, say.  Further, "Tallies" thrown into a electricity powered mass-transit build (trains, trams, etc.) in Athens and simultaneously increasing taxation on gasoline and diesel fuels (paid in "Tallies") would affect, in some way, the necessity for importing oil.

I note Greece is dependent on Tourism so a government run and favorable exchange rate for euros to "Tallies" might prove helpful for accumulating hard-currency (sic).

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre