The MIDI sequencer project in the video above requires some previous experience with woodworking, so I am going to break down some of the more interesting portions of the project into self contained guides.
This guide will focus on creating metal inlay using a fine metal powder that you can make at home. I have used this technique for years as a way to add a decorative inlay to turnings on a lathe, but the same technique can be used to create unique capacitive touch buttons. You can make the button as simple as a drilled circle, or create very intricate designs with a laser engraver.
Check out the guide on the Adafruit Learning System!