Respectively named for the famous inventor and painter, DaVinci ($30) and Monet ($30) are metal styluses influenced by the traditional hand-sketching tools and paintbrushes favored by creative users. DaVinci is shorter and more like a pencil, with a combination of grips and soft edges, while Monet is longer -- akin to an extruded Q-Tip made from colored aluminum. Each has a similar black rubber dome at the top for writing, and nothing at the other…