Looncup: Periods are messy, often unpredictable experiences, and feminine hygiene products can cost a lot of cash. Menstrual cups—which considerably cut down on waste and expense because they can be reused—have been around since they were patented in the 1930s; Looncup takes the standard, medical-grade silicon form, and adds modern tech to track a period’s volume and even color, which can be an important indicator of health and wellness. The embedded sensors are nonintrusive and connect directly to an app, giving real-time data about your blood. Who knew vaginas would become the next frontier for the internet of things?