Since tipping is not required or even common, the hourly wage for restaurant and pub work is between 11 and 15 dollars per hour. If you have worked with children in your life, you will always have a marketable skill. Put this to work for yourself in Oz. The greatest concentrated source of potential earning is in the classroom. If you can coach a sport, teach an activity, or just be a responsible caregiver and make a healthy lunch, you will find cash soon enough.
Parents are always on the lookout for babysitters and tutors.
Besides experience, friendship, and culture, of course, there's money. Pay rates in Australia are higher than in the United States, which make for a generally higher standard of living for the working traveler. Affordable things like rent, modest dinners out, drinks at the pub, and taxis all combine to make for an increased level of comfort and happiness. Australia is a very livable society. There is a large working class, and an infrastructure in place to accommodate this class.