Step 5: Installation
I installed two screws into the wall spaced 8" apart, then hung the sign above this sort of doorway/staircase thing. The wire runs into the "server closet" under the stairs, into the relay box, which then has a cable that runs to the bathroom door around the corner.
It works pretty well since people would already leave the bathroom door open when not in use. I got lucky with estimating the wire lengths so I didn't end up having to splice any wires together.
Besides the reportedly amazing productivity benefits, it was a a fun project and, as always, the laser cutters are like making things on ez-mode.