Christina Mercando d’Avignon, 33, is the founder of smart jewelry startup Ringly. The jewelry connects to the Ringly app where women can customize which phone calls, texts and app alerts filter through to the ring. They select how to be notified -- via vibrations or flashing lights emitted from the ring. Women can then stash their phones away and not miss a beat. D’Avignon -- whose background is in product development -- cofounded the startup in 2013.