Just a few updates... the bathroom previously had a bare bulb suspended in a rusting metal box. The new light and fan combo isn't sexy, but does the trick. The components are wired together, so I added a timer switch to turn the fan off after a short while.

For some reason, no one (including myself) can ever remember how to work the guest shower. (In fact, during the home buying inspection, the inspector, the agents, and everyone in the house failed at this... we had to call the seller.)

Simple solution: computer graphics and laminating plastic.