In line with Olympic tradition, pin collectors from across the world gather at London 2012 to trade and collect pins.
Men, women and youngsters from across the world take part in a collecting obsession that stretches back decades for some.
But for Jennifer, it was day one.
"Well I actually started today, so I would not consider myself a pin collector but it's really fun so far. It's really neat to find pins from other Olympics, I've only been to this one but it's kind of like capturing a piece of history, seeing these different places that other people have gone (to), it's fun," she said.
Jennifer already has around 10 pins in her collection, but it's not difficult to find a veteran like Doug Kaplan, a collector of pins since the Olympics at Los Angeles in 1984.
"Oh at home, I have probably a couple of thousand (pins). I have towels, like beach towels from each Olympics with the logo on them and then I fill it up with my pins from that games and other games, so all my walls at home are covered with these beach blankets full of pins. My friends think I'm crazy," he said, adding he had booked his two-hour space in the official trading spot weeks in advance.
Others traded outside the main grounds of the Olympic Park, Frederico Garcia said he begun collecting and trading pins since he was a child.
"I'm collecting pins since 20 years ago, I started when I was a child in Barcelona in 1992. So for me, it's a hobby and it means that every piece has a story behind (it), so it's really interesting, we are having fun here meeting lots of people from everywhere," he said.
The trade itself appears not to involve the exchange of money, only the pins of which individual sports pins from athletes and rare pins of which there are only a few are highly prized and desperately sought after.