Well, we decided that one way to get people to appoach each other was to advertise the languages they speak, so that the Do-you-speak-X question would not be a barrier to engagement. We made thousands of buttons with 20 major languages printed on them in their own alphabets AND we made a blank button. On the blank button, people wrote other languages (such as Nepali and Afrikaans), and dialects (like Kreol and Bavarian) and even in one case a rather key coordinating person coyly wrote, "Don't even think of talking to me" (but I don't think he ever wore it).
In this process, we learned new things about colleagues - our Australian Director spoke Nepali (he had worked in a field office there), a Canadian colleague spoke Chinese for the same reason, our American Chief Scientist was fluent in Thai. These buttons were conversation starters even among people who knew each other. That was a huge benefit, not to mention sharing the incredible pride that people felt when they put them on (like my colleague Nicole in the photo above who sported 7!)
The buttons were a hit! The Information Booth workers had them, the Registration people had them, the Commission on Education and Communication members had them, and many, many more. These big conferences can be so impersonal, yet are attended by people who have the most to gain, exchange and learn from great conversations with each other. The question we asked was," What can we do to get people talking together?" One small answer, only 30mm across, turned out to be a big success.