It's like sushi for your computer! You've probably seen the Power Squid by now, good for all things electrical. Now here's the USB version of that same thing. Pack one in your laptop bag and you'll be good to go for just about everything.
Okay nothing beats a simple squid cable for cost and simple effectiveness. This one has more ports than the average hub, allows you to separate out the devices, or lock them together as needed into one block.