My thoughts exactly. I'd be inclined to donate the dividends to a range of causes close to our hearts. I'd probably also establish some scholarships for underprivileged kids as well as an annual prize for Australians who have excelled in sustainable energy technological innovation.
No shares or property - so I would probably go commodities and maybe have a stab at currencies trade (surprised no one has come up with any crypto thingies...) Most likely, I'll just build up physical gold stash - small increment gold bullion coins. I know pretty boring.... The Y-man