do about it. Sure, there were wall outlet fragrance "plug ins," scented candles, canned air fresheners, and of course windows which could be opened -- but not one of those was USB-powered. Of course, those days are long gone, because a random Chinese sweatshop has dreamed up another modern-day marvel: the USB oil burner. If you're like us (and we think you are), there's nothing you want to do more than pour scented oil into something that plugs into your computer. Available in rose and peppermint, $7 each.