A pen, highlighter, pencil, stylus and a ruler all in one. You’ll have it all at your fingertips. It would certainly be a nice gift as well.
“This pen does it all. It serves as a black ballpoint pen, a non-drying orange highlighter ballpoint, a 0.7 lead pencil, a stylus for PDAs (Personal Digital Assistants) and a ruler with inches and centimeters. Uses standard refills.”