Well everyone knows that Sharpie pens are amazing. I keep one in near constant reach of myself at all times. Now the Sharpie company has gone one better by introducing the Liquid Pencil! It is a stylus that writes like a pen but the ink is actually a made of graphite so you can erase it. Then after three days of drying in the air the ink becomes permanent. Bravo Sharpie, Bravo. (via Boing Boing).