In true Shark fashion, many of the stars of ABC's "Shark Tank" say they plan to give gifts made by their own companies this holiday season – but the show and its investors have helped launch some popular products. In fact, the top 20 best-sellers from the show brought in $1.8 billion in retail sales in 2019 alone.

Here are the gifts Mark Cuban, Kevin O'Leary, Barbara Corcoran, Daymond John and Robert Herjavec say they'll give their friends and family this year.