Barbara Corcoran meets with Season 4's Cousins Maine Lobster to discuss expanding into a brick-and-mortar space. Daymond John mentors the young creator of Season 5's Mo's Bows, and they take a tour of Daymond's childhood home in Brooklyn. Kevin O'Leary has some advice for the makers of the Bottle Breacher beer bottle opener, who encountered a bottleneck in production after their Season 6 appearance.