A week or so before Maike Hohnen took the fishing trip that would change his life, he drove past a building site and spotted a sign that read “Free”. Nearby, on a patch of grass, were a hundred or so plastic buckets. Instinctively, Hohnen pulled over, grabbed eight or nine of them, and threw them in the back of his pick-up truck. “When I got home I put a couple in my boat,” he says. “I thought to myself, these will come in handy one day.”