Re: Voltage tester idea
You chase down a handful of electronic parts that Radio Shack won't have, and then most important of all, buy some breathe mints because an (mini in this case) Altoids tin is the most effective way to put a case on anything. Small project boxes are incredibly expensive. Of course the Altoids box doesn't LOOK very commercial, and I suppose the TSA would be closing down airports if they even saw it (good lord, a metal case with wires and a battery!) but if I wanted to keep it under a sawbuck, that was how it had to happen.
Or maybe I should have splurged on the fancy case and taken it to West Marine? (VBG)