And for those who have everything: Caliber Collection

Jessica Mindich, owner of Jewelry for a Cause, “gives lethal weapons gorgeous second lives.” For her Caliber Collection, she worked with Newark, N.J., Mayor Cory Booker to develop the concept of using the brass and steel salvaged from guns seized and shell casings collected by the city’s police. Mindich’s team turns the metal into cast bracelets, cuffs, and cuff links, each embossed with a gun’s serial number and the word “Newark.” Mindich has pledged to donate a fifth of the proceeds to a gun buyback program, and she hopes to soon bring the concept to other high-crime cities.
From $150, jewelryforacause.net
Source: O, The Oprah Magazine