Nescafe have a pop-up coffee shop set up in the middle of QV square in the Melbourne CBD, giving away free coffee (full size, not a sample) made with their Gold "Barista Style" coffee. There's a few styles you can choose from (Latte, Flat white, etc). I asked how long they're there for, and the dude said until Sunday. There are no requirements, no app, no coupon, just walk up and order.
It actually pretty drinkable for instant. On par with Moccona.