Arduino Trivia Buzzer System Update

So a quick update on my Arduino Trivia Buzzer System.  Last time, I gave you a basic schematic for the handheld buzzers.  Since then, I've completed 8 more handheld buzzers that are ready to be painted.

I needed a break from the handheld buzzers, so I thought I'd work on the control box.  One of the issues I'm having is that I don't really have the space/tools available to make the finished, shoe-box sized control box in my apartment.  Unless I can con my brother into making one for me, I'll have to find the room sooner or later, but in the meantime, I wanted to get some other work done for it.