So my wife got a Fossil watch as a gift, but she has wee little arms.  I thought the pins on the metal band would be easy enough to slip out, but they aren't.  That's where this lovely piece of kit comes in.

It's crafted of solid and nicely machined aluminum, and the screw moves with precision and little effort.  The pin can bend (but hasn't broken), but it does the trick, and the next thing you know, your watch band has been adjusted!  There certainly are better tools, but for the price, I haven't seen one.