Tim Alex Jacobs (inventor, artist, musician) may have the coolest custom business cards ever. And in true DIY/maker fashion, he built and designed it himself.

A stylophone is a miniature electronic musical instrument that produces a distinctive buzzing sound when a stylus is drawn along its metal keyboard. Powered by USB, this nifty card/instrument is sure to make an impression.

The video above does a great job demonstrating how the card works and you can learn more about the design and challenges Alex faced when building his prototype on his website, Mixtela.com