World Maker Faire

Once a year, builders and tinkerers of all ages convene at this innovation-centered event to show off their inventions—and teach onlookers how they can make them at home. This edition features talks on wearable electronics, 3D printing, droid-building, costume design and building your own phone, plus, oddly, a dance battle. We guess it truly is a fest for movers and shakers of all stripes.