Customizable Parametric Face Mask

This .scad can generate a back-of-the-head face mask holder of any length, width, with any number of "teeth" of any size (at any angle!). It even lets you customize it with a corporate logo, custom emoji, or whatever text you like. It can even generate models for multi-material printing (to get that crisp look like the one in the photo)!

Included are a number of ear saver STLs (all generated using the .scad):

* Regular (embossed) and "outset legend" versions (for color change; M600) with the "face with medical mask" emoji. There's also a STL with *just* the legend for multi-material printing (so you can add it as a part).
* The same as the previous bullet but with the Rod of Asclepius symbol instead of the face mask emoji.

Why I made this: My mother-in-law made me an awesome face mask but the elastics are slightly too short *and* it uses elastic bands that are much thicker/wider than standard face mask elastics... So none of the existing models actually worked to hold it