Step 1: Gather materials
I found an old piece of copper flashing for the base, discarded strands of electrical copper wire from a nearby house under renovation, 4 switches scavenged from an old chassis panel, and red, green, and black multi-strand hook up wire. I like working with copper because it easy to fashion into the end result that I want and copper presents a nice patina as it ages. BEWARE: Copper is an efficient electrical conductor so avoid shorting out your Arduino that will probably disable it. Plastic, wood, ceramic or stone would also make a suitable base for this kind of project--you design and decide for yourself.
My tools were pliers, different sized small drill bits and drill, hammer and metal file, soldering wand and solder, and volt-ohm meter.
I include the Arduino source code as MANOA_LOGIC.txt