Since we're sharing... I started a project a while ago whose goal was to show how intervals could be visualized horizontally or vertically and then "stacked" or composed in different ways to create scales and chord shapes up and down the fretboard.

I didn't end up finishing the project but created some fun visuals...

https://user-images.githubusercontent.com/42359/88242522-6bb...

https://user-images.githubusercontent.com/42359/88242530-724...

I got a basic page up that lets you draw Freboard shapes (and play sounds using Tone.js) declaratively:

  <div class="pattern" data-notes="1, b3,  4^, 5,  b7^, 8"></div>

Where the notes represent scale degrees and the caret is a string skip:

https://intuitivemusic.com/fretboard.js/

Using a similar framework I also created a page where I attempted to make sense of saxophone fingerings (you can hold down on shapes to hear sounds):

https://intuitivemusic.com/saxophone.js/