Would you give up Christmas presents? Or are you like many of us and associate what you spend, with how much you care? There's been a backlash against over-consumption, so why do we still go wild at Christmas? And how can we untangle ourselves from the cycle of holiday spending? Steph Thompson went on a no-buy challenge, Daniel Kiely is an economist at Curtin University and Dr Paul Harrison is head of consumer behaviour at Deakin University. Picture your favourite Australian beach. Imagine a headland, the fish & chip shop, sun-worshippers, beach flags snapping in the wind ... and that surf club standing guard by the shore. That view - that classic image of the Australian coast - is in trouble. Eroding dunes. Crumbling cliffs. Clubhouses teetering on the edge. Coastal erosion is quickly reshaping Australia's iconic coastline. So what can be done? Glenn Arnold is the President of Inverloch Surf Life Saving Club, Steven Pearce is the CEO of Surf Life Saving New South Wales, and  Prof. David Kennedy is a coastal geomorphologist at the University of Melbourne. You've probably seen BMX dirt jumps popping up in parks or empty lots ... built by the riders themselves, for the riders. It's creative, social, and physical… but it's also what gets them into trouble, as councils across the country crack down on these DIY tracks. New research shows that it's this activity that takes place outside of organised sport that can be really beneficial. So if we're pushing teens off their screens, don't we owe them real-world spaces where they can actually build something ... together?  Julie Ritchey is a Brisbane mum who spearheaded a local protest to protect DIY BMX jumps in her neighbourhood and Dr Dave Camilleri is a Senior Lecturer in Education at the University of Melbourne.