The water-resistant iShower Bluetooth speaker ($99.99) from iDevices lets you listen to music in the shower while leaving your smartphone or tablet someplace dry -- and safe. Its 200-foot range means that (depending on wall placement, etc.) you might even be able to leave your expensive device in your room.
The iOS, Android and Windows Phone-compatible speaker hangs over a shower head and has play/pause, forward and back buttons that let you control the music source from inside the shower. (It doesn't, however, show track names or controls for picking a new playlist, so choose wisely before you head off to your shower sanctuary.)