Useful? Debatable. Stylish? I say yes. Though most computers have very little need for personal flotation devices, when used elsewhere it can give an app like the Help Viewer a bit of cosmetic pizazz. Louis Harboe’s beautiful Life Saver icons are detailed, colorful, and well-supplied; a five-color set of pixelified PFDs to strengthen your Dock’s aesthetic appeal. The work is available on deviantART, and is quite easily the safest icon you’ll probably ever download.