I remember reading a story a few years ago about a guy from the U.K. that had taken a $20 flier on Bitcoin or something. He forgot about it and years later heard people talking about it and news headlines and such. Managed to dig up his old account info and I think it was worth like... $800,000 or something insane.
RE: Teenage bitcoin millionaire can see the cryptocurrency’s value shooting as high as $1 million