If you had to create a tournament bracket for the most irritating yet mundane parts of any DIY project, the Great Untangle — that is, the process of untangling the endless knots and tangled loops of your extension cord — would definitely make it within the sweet sixteen, if not the top five. Even if you carefully wind it up every time you're done with it, it feels inevitable that the next occasion will see it magically become re-tangled, looking much as if your kids tried to use it to practice making knotted friendship bracelets (and not very successfully).