It costs $1,200 to clear a single landmine. But Afghan designer Massoud Hassani has created a device that costs just €40 (roughly $51 U.S.), needs only wind power to operate, and can clear two or three mines in a single trip. In the video above, you can see how his elegant design for the Mine Kafon was inspired by a childhood spent navigating minefields in Afghanistan, and how a simple child’s toy acted as the catalyst for an invention that could change the world.