Moved to Forum: Original Link
I know this isn't exactly a freebie, but for folks new to Melbourne (and visitors) with an (newish) Android phone, there is no more a requirement to buy a $6 Myki card.
more details at
https://www.ptv.vic.gov.au/tickets/myki/mobile-myki/ and
https://www.theage.com.au/politics/victoria/melbourne-commut…
You pay $10 set up for $10 credit.