Far CU and TelsBoy, thank you. I could put it no better as I came the same road.
I am disappointed that a couple of the posters above should scoff at any scheme that will cast favourable light on GA/private flying. In many happy years of aviation I promoted flying at every opportunity: local council, community groups, disabled or underprivileged children; the last being particularly satisfying when you see the wonder in their eyes. I would have jumped at the chance to assist the Australian project.
I admit that I had another motive: community promotion and activity is the best
PR that private aviation can get. Maybe those who find such projects so amusing are among those bleating about the real and ongoing threats to so many GA airfields.