At an age when many of us were dropping loose change into our piggy banks, one enterprising little boy from the United States is already a self-made multimillionaire.

Ryan, 6, has made an eye-popping US$11 million (S$15 million) this year by doing what a kid may find most enjoyable - reviewing toys.

The amount has put him among the top 10 on Forbes’ list of highest paid YouTubers in 2017. His channel, Ryan ToysReview, is tied with comedy channel Smosh for the eighth spot.

The channel is described as a "toy reviews for kids by a kid", and boasts a large online following with over 10 million subscribers since its inception in March 2015.

The videos - a mix of unboxing videos and vlogs (video blogs) - are rolled out on a daily basis. They are filmed by his mother, who quit her job to produce the videos full-time.

Ryan’s dad joins in the fun in some of the games, allowing children around the world to get an up close and personal look at some of the latest toys in the market.

And if you’re wondering about what Ryan does with the toys after reviewing them, his family donates them to local charities.

The successful YouTube channel has spawned a second one called Ryan’s FamilyReview in Nov 2016, which features family time with Ryan’s parents and his adorable twin sisters.

With the YouTube channels rolling in the dough, that’s his college fund (and his sisters’) all settled, we think.