In addition to the collection of fonts.
When I started out with three.js, I made a font with balls.
It is mostly in German, but certainly understandable.
http://threejs.hofk.de/display/display.html
The font can be edited easily. It is in a simple text file.
This allows you to design your own characters.
You can use other objects instead of the three.js-spheres. For example, hexagons of lines.
Excerpt from the font definition.