Black Dragon Backpack
Looks like Puff the Magic Dragon puffed himself to make this Black Dragon Backpack. Oh wait, nevermind. It says the bag is made from "eco leather," not real dragon skin, so Puff is probably fine.
Unless he locked himself in a cave with the Studenglass, in which case he is either more than fine, or not fine at all.
The Black Dragon Backpack is about 27.5" long nose-to-tail, and appears to have the capacity to hold a single bottle of wine. So, a great gift for your girlfriend, especially if she's goth or emo. And if she's not, maybe you could, like, spray paint the black dragon pink for her.