Martin Lindstrom got into the advertising business early on.
"I started up my own ad agency when I was 12 years old," he tells Guy Raz, host of weekend on All Things Considered. "I was a huge fan of Lego, so I built up my own Legoland in the backyard of my mom and dad's garden."
No one showed up on the first day, but Lindstrom persuaded a local ad agency to sponsor him. On the third day, he had 131 visitors.
The only problem? "Visitor number 130 and visitor 131 were the lawyers from Lego suing me."