I'm leaning more towards snaking a bare wire along the inside of the enclosure cover. It'll do the job of grounding all the metal components, and it's cheap and without serious machine labour.

I've also been thinking a lot about how to get lettering on the front. My first idea was engraving acrylic sheets and backlighting with LEDs, but I've already got a LOT on my plate as it is.

So I found out you can etch into PLA without any special hardware or material. An diode laser engraver "should' do the job (I need to do more research).

It's a matter of testing settings. This guy is using a 30 watt machine at 20%; that's only 6 watts. I'm looking at 20 watt machines, since 10 watts doesn't leave a wide margin.