Here is a robot that can write notes for your loved ones or colleagues. The Scribit Drawing Robot can write in 8 colors on plaster and glass. Simply hang it using its slim metal wire from two nails, plug it in, and use the companion app to upload text or drawings.
Scribit can not only write things on its own but erase them. Carlo Ratti is the designer behind this cool robot. The below video shows it in action: