If you've ever owned a young animal, whether that's a puppy or a particularly suicidal cat, you know they have a strange desire to chew on power cords. This causes all sorts of problems. Over on Cool ...

I learned this trick from a truck mechanic in Appleton, Wisconsin, years ago. Many of us use expandable tubing-also called "snakeskin"-to make clean wire bundles. But finishing the ends of this stuff ...