This is going to be a super short gear review. If you have an iPhone or iPod, the Macally PowerLink charger is crazy sweet. It’s a standard USB charging cable, a 2gb USB thumb drive, and an emergency battery all in one thumb sized package. The battery option will jump an iPhone battery up about 1/3. Which is pretty important considering my damn phone battery struggles to last through one full day. That’s heaps of useful for something that takes up zero space in your bag.
I originally saw this charger on Gadling a few months ago and have been using it exclusively ever since. I make a point of having only the most efficient gear in my pack, and this little thingy definitely meets my standards.
Edit: This baby is $36 at Amazon.