I'd have to vote for cable ties as one of the great inventions of the Twentieth Century. The things you can do with these little strips of plastic—sometimes called zip ties—are almost endless. You can bundle wires, secure cables to chassis members, route oil or hydraulic lines out of harm's way, segregate electrical harnesses in an orderly fashion—and cut your hands and arms to shreds. Snipping off the excess tie after installation, you see, leaves behind a sharp-edged bit of plastic poking up from the little latch that locks the tie in place. Later, when rooting around in that same area to access something else, you inevitably drag an arm or hand across those edges, sometimes making you look like the second-place finisher in a two-man knife fight.