Men’s jewelry is far more popular these days than it’s ever been before, but it’s still a bit of a mixed bag for most guys when it comes to rings other than the one you wear on your left ring finger. It’s a different story when your ring is made of an actual piece of U.S. currency. [Before you ask, yes, it’s legal.] Nicholas from The Ring Tree makes and sells the popular coin rings, but he also put together a step-by-step tutorial about how to make your own that involves a drill, blowtorch and a lot of hammering. It’s stress relief with a positive byproduct.