All it takes is one bad bulb to keep all of the other Christmas lights from lighting up. The trouble is, how do you find that one bad bulb? This gadget is supposed to help you find it. A bad bulb ...

We're all looking to bring a little extra brightness into the end a difficult year. But no matter what holiday you celebrate, there's a chance you may find yourself tangling with Christmas string ...

A long, long time ago there was a great Design Idea for a simple gadget to find a bad bulb in a series-connected string of Christmas lights: This is really simple and works great, but it exposes the ...