Are you one of those people who sings in the shower? I never really have been, but then I'm not one to sing when there isn't already music playing to help me stay somewhere in the neighbourhood of the correct key. If I get some music going, though, it's game on depending on the artist in question. I used to keep a radio in the bathroom, but it ended up getting destroyed from the humidity. So now my bathroom is a silent place, devoid of singing (which I'm sure makes anyone else in the house grateful).
Adesso has just launched a speaker that could meet my needs pretty admirably, however. Their new Xtream S1 Bluetooth® 3.0 Waterproof Speaker is meant to be used in the shower or bathtub, around the pool, out in the rain... anywhere you might want music but have typically not been able to have it for fear your speakers would get wet and ruined. Sure, this isn't a new concept, but these are neat little guys that won't take up much room.
I'm really considering getting one of these. Maybe not so much for singing in the shower, but for hanging out in my yard, or to use in the kitchen while I'm cooking. It pairs to your phone up to 30 feet away, so the backyard would work out perfectly. Then in addition to talking to the plants in my little herb garden, I could serenade them as well! Although on second thought, maybe that's not such a good idea. I want them to thrive, not cower.