It's a nice thought ... but €3 each covers the immediate payment needed.
Total Greek debt is €323 B [1] and there are 503 million inhabitants in the EU, making 'pay-off the debt' more like €642 per inhabitant
For context total EU sovereign debt [2] is €24,415 per inhabitant
[1] http://www.bbc.com/news/world-europe-33325886 [2] http://www.eudebtclock.org/