Older Gizmag readers may remember the Etch A Sketch, a child’s doodling utensil that used aluminium powder and a glass screen to draw horizontal and vertical lines and the Magna Doodle, a similar product that used a magnetic drawing board. A cheap and cheerful version of the latter, often called the ‘magic slate’, consisted of a pad and stylus that allowed scribbles to be erased by lifting off and replacing a film of plastic. This concept has now been rather cleverly turned into a Mouse Pad called the Scratch-n-Scroll...
