A 7-year-old boy is a multi-millionaire thanks to his YouTube channel. Ryan of Ryan ToysReview has had incredible success on the platform since 2015. The videos feature him opening, unboxing and playing with toys, and have been viewed more than 26 billion times. The pint-size entrepreneur has 17.3 million subscribers on the site, who not only value his short clips, but are influenced by his taste. His power to drive toy buzz made Ryan the top earner on YouTube this year. He made $22 million.