Dalton Ghetti's work is incredible:
Many artists have used pencils to create works of art but Dalton Ghetti creates miniature masterpieces on the tips of pencils ... Dalton uses three basic tools to make his incredible creations a razor blade, sewing needle and sculpting knife. He even refuses to use a magnifying glass and has never sold any of his work, only given it away to friends. He said: “I use the sewing needle to make holes or dig into the graphite. I scratch and create lines and turn the graphite around slowly in my hand”
Many more images here.