Dropping an iPhone or iPod in water is one of the quickest ways to destroy Apple's pocket devices, and there's little you can do to fix if it that happens. iFixit's Thirsty Bag ($10) is the only professional solution we've come across; think of it as a more sophisticated version of the old "bag of rice" trick. Inside the sealed paper bag are desiccant beads that draw the moisture out of the device and lock it in. If you immediately toss your water-damaged…