 Artists throw individual LEDs onto a metallic object, like public sculpture or road infrastructure, which itself acts as a canvas.LED throwies were invented in 2006 by the artists Evan Roth and James Powderly, the founder of Graffiti Research Lab at Eyebeam Atelier open lab New York City.After Graffiti Research Lab posted the instructions how to make a throwie on Instructables, throwies went viral on the Internet and could be found in advertising, were for sale as DIY kits or further developed by other artists and hackers worldwide.