Business Insider recently wrote about the hobbies that several highly successful people practice when they have spare time. For instance, Bill Gates play Bridge. Michelle Obama loves running. Kate Middleton loves coloring, and Warren Buffett plays the ukulele. Former President George W. Bush is a prolific painter, having painted more than 50 puppies, numerous landscapes, and at least 30 world leaders. Warren Buffet, the CEO Berkshire Hathaway, has played ukulele for decades.