Machines to shred, melt and mould waste plastic are popping up in workshops around the world - from the UK to Malaysia, Kenya to Mexico. \n \nThe project is being led by an organisation called Precious Plastic. They put designs for the devices online for anyone to download and build themselves. \n \nMore than 400 teams around the world are now taking on the challenge of plastic waste using these machines, making everything from sunglasses to plastic bricks in the process.\n \nPresented and produced by Tom Colls\n \nImage: Precious Plastic