While a graduate student at the Royal College of Art, Thwaites undertook to build an electric toaster from raw materials. His account of extracting iron from rock, hand-carving a wooden mold for forming molten plastic, precipitating copper out of pools of acidic mine waste, and melting Canadian coins for their nickel manages to be both hilarious and sober. In the end, Thwaites’s toaster was a spectacular failure—a gloppy aesthetic and functional mess that cost £1187.54, or 300 times more than the £3.94 commercial model that inspired him—but it taught stinging lessons about environmental responsibility.