As this is office month here on the Curb, we've decided it was time to subdue the wire & cable beast. We're not using swords, whips or potions to do it either. Nope, we're using our smarts. Our DIY smarts, that is.
This trick is a classic: Instructable-maker Condongolev highlights the basic, but clever, technique of sliding cables, cords, and wires in that tiny groove between the carpet and the wall. Just extend the wire, and use a pointed, but blunt object (like a broken pencil) to push it into the little space. Works great for speaker wire, coax cable, power supplies, etc.