Home made wine cellar:

Make sure the mounting brakets and ceiling can support what you are storing, otherwise you'll need some bodywork done on your car.

Everything is powered by USB nowadays, so this seems like the next logical step. USB wall charger, replaces your current one and can support USB 1 - 3. Simple and elegant solution, available for $24.99 from ThinkGeek.

You can probably guess where he came up with this idea. I spend a lot of time there as well - why didn't I think of it?  Anyway, I'm sure you've got lots of loose cables around - this is an ideal solution!