Give a man a crystal-and-leather necklace, and he'll wear it for a day. Teach him how to make one, and he'll wear it forever. Today's Groupon ends your helpless dependence on jewelers. For $20, you get your choice between a Beginner Leather and Crystal Necklace or an Earring Boot Camp class at Beadlush. As a reward for your newfound independence, you'll come away with a proverbial fish—the necklace or earrings you make in the class—and, like a river deity, the potential to build many more fish from scratch in the future.