Every collector has one. That one item, that really rare piece that if they could just attain it your collection could almost be complete (almost). It could be something that you’ve only seen in magazines, or an item that was almost within your grasp before it was snatched out from under your nose. Eobard Thawne even has one as you can see above . By the way I’m not encouraging any violence in the pursuit of collectibles, it just seemed like the most appropriate picture. 😀