Sure, you could do something boring like plug your gadgets into the wall to get them charged, but that's what everyone does. Don't you want to stand out and be different? Of course you do.
That's why I suggest taking a lot of time and energy and building yourself this Breathing Powered USB Charger. It straps around your chest and uses the motion caused by your breathing to very slowly charge up whatever USB device you plug into it. Is it practical? Hell no. Is it cool? That's debatable. Is it unique? Yes, yes it is. And isn't that what really matters?