2007 - Reinless Spirit On July 26, 2007, the artist began affixing toothpicks, a total of 1.5 million over a 4x2m surface, to create the image of a horse. The work was dedicated to Antonio Gaudi, and was confirmed on September 4, 2007 as the World's Largest Toothpick Mosaic.
2006 - Leonardo Da Vinci Using industrial nails, the artist re-created the self portrait of Leonardo Da Vinci using nearly 400 kilos of nails over a 2x4m surface. The record was confirmed in Tirana by Guinness World Records on September 4, 2006, as the World's Largest Nail Mosaic.
Courtesy of Etoday and Most interesting Blog