Haha, yeah i was aware of what DIY stood for but wasnt sure how to do it with that deck...interesting fact about the "shiner"...might have to try that.
Traditionally, a shiner would be a piece of metal jewelry, often a ring, with a reflective, flat surface that's either unadorned or has a very fine engraving on it, fine enough to not interfere with the surface's reflective properties. Shiners can also be watch bands, bracelets, cigar or cigarette cases, lighters, flasks, a dark-colored glass or one containing a dark beverage - anything that can provide one with a reflective surface and that wouldn't seem out of place either on your hands/wrists or on the table right in front of you.
Magick Balay, a New York magician, has a DVD out with The Blue Crown called "CIA: Covert Intelligent Assistant" that covers ways to use and conceal shiners - it's worth the price, and Magick's a great entertainer, very skilled. It comes with a simple but powerful gimmick you can use to make shiners out of innocent objects.