I went to an IETF meeting in the fall of 1998 where the thing hanging around your neck was a clear plastic holder that contained both your name tag and a brochu

I went to an IETF meeting in the fall of 1998 where the thing hanging around your neck was a clear plastic holder that contained both your name tag and a brochure. Not quite as nice as this solution, since you could take out the brochure and lose it. Probably much cheaper, though.