The Scribble Pen ($150) is capable of producing virtually any color ink on the fly. It features a color sensor on one end of the pen which you use to ‘scan’ something to choose the color you want to write with, then it mixes the ink in the barrel of the pen to do it. Pretty cool. If only I had it way back in the day when I actually used pens to, you know, write something.
I can’t remember the last time I wrote something by hand beyond signing the back of a check or a quick sticky note. Who uses a pen anymore?