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 ...

Strings of colorful light bulbs are indispensable decorations during Christmas. Colorful bracelets and necklaces will be the ...

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 ...

Generally speaking, technology is improving all the time. And yet, strings of holiday lights—whether they’re for an indoor tree, or the outside of a house—never seem to get better. Sure, there are ...