Face plate is done and everything is ready for my son to start wearing it to school, which he's been itching to do for months now!

I'll probably be making a new face plate with some tweaks to the dimensions to reduce the pressure needed to press the button.  It's not hard now, but I think I can make it a bit easier.  And plastic mills like butter compared to metals, so it wouldn't take long.  Aside from that and a few tweaks to the programming, it's pretty much done.

There's one issue I'm investigating that might require a modification to the PCB.  Once I take care of that, or rule out that the circuit might need to change, I'll post the KiCad files, Arduino sketch and 3D model of the housing.  

Here's a video of it working:

And here's some photos: