Great idea and if you're not getting the top interest rates for your savings make sure you check the best interest rate tables:

Compare best interest rates for instant access savings | Money | Saver Scene Australia
Compare the best term deposit interest rates | Money | Saver Scene Australia

Money Tree - what if money grew on trees?

The results of a behavioural experiment show some Australians will go to almost any lengths to get their hands on cold hard cash, especially when presented with the ultimate financial fantasy, a money tree.