As newspapers, magazines, and books are slowly replaced with electronic alternatives, the art of CMYK printing is slowly dying alongside them. So now's as good a time as any to grab a souvenir before the technical process becomes a forgotten art—and these CMYK coasters seem to fit the bill, especially if you've got wooden furniture you want to protect.

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Fifteen bucks gets you a set of four acrylic posters tinted cyan, magenta, yellow, and black—or "key" if you're counting off the letters in CMYK. And when stacked, they create a full-color recreation of the Mona Lisa. So you can add "a crash course in art history" to the feature list for this one too. [The Colossal Shop via The Awesomer]