Lori Greiner meets with the duo behind Season 6's Squatty Potty, whose orders soared to $3 million. Mark Cuban checks in with the Tower Paddle Board business from Season 3. Kevin O'Leary hears ideas for expansion from Wicked Good Cupcakes. Robert Herjavec's Season 1 investment in Grill Charms has had great success, while trying to find balance between one's personal life and running a business.