I'm looking for an iPod docking station which I can simply plug into my PC without its own power supply, hel?

But, I'd like on which can accept multiple iPods at the same time, for syncing and charging etc. It's basically just something to stand up my iPods whilst they're charging and synchronizing. I've looked all over the internet, and the only one I've found, is one that needs a power supply. All answers appreciated, thanks.