Shopping for a gadget lover? What does every electronic gadget have in common? They require batteries.
A battery extender makes a great gift. What do I mean by "battery extender?" Well, I'm primarily thinking about external battery packs that allow you to extend the life of your gadget if you're on a plane, bus, train, etc. If you don't have access to a power source and you can't plug in to recharge your device, then life can be quite frustrating if you have a gadget but you can't use it.
I have a robust external battery that I carry so that I can charge and power my laptop (actually, it's a convertible Tablet PC), my iPod, my smartphone, my Bluetooth headset, and any other gadget that requires power either via a USB cable or a proprietary power supply. These external batteries come in all sizes and shapes and they've been great.