When most Gen Y’s think of Aussie inventions, one that may spring to mind is Wifi : an indispensable tool (unless it throws a temper tantrum... looking at you, eduroam). But sitting on my couch binge-watching Shark Tank for no apparent reason made me wonder what other ingenuities Australia has created: apart from Halal Snack Packs, Vegemite and Bunnings BBQs, of course. So, here are a few home-grown inventions that may surprise you. The Fridge: This multi-billion dollar idea came from the humble James Harrison, a Geelong politician who also later edited The Age. He patented a vapour-compression refrigeration system,