Here's an interesting, yet half-assed idea. These waterproof AS-PS55 speakers from Pioneer are small, colorful, made of plastic and come with a hook to hang anywhere in the bathroom. The only problem I see is that you still have to connect it to an audio player, which isn't so waterproof—unless you get yourself a waterproof casing, which makes things just a little more complicated. The speakers include a 35mm stereo jack and are powered by four AAA batteries. Oh, and in case you're still interested, Pioneer also has a aromatherapy candleholder called the Happy AQUA Lumi, which comes with multicolored LEDs that change colors seven times for your viewing pleasure. These are also battery-powered and should last about 96 hours.
Pioneer launches accessories for use in the Bath tub [New Launches]