Jessica Chan a young contemporary artist from Portland, Oregon, USA, who works in industrial design invented a pen that writes with any kind of liquid that “stain” like wine, beer, tea, juice and others.
It is called WINKpen and works like any ordinary pen, except that instead of ink it uses other liquids. To function, the pen must be filled with the chosen liquid, which is sucked up into the reserve area, made of glass. It can also be used for calligraphy. Cleaning and refilling this writing instrument is simple too.