As you probably know, we sell business card holders, although our range could never be described as boring it is not quite as unique as some that I found on the Geek Stuff website
I'm not sure these would be appropriate for every meeting you go to, but if you've got a reputation as a nerd, then you might be able to get away with these videogame-themed business card holders. The first is a Pac Man game themed business card holder - an all time classic by anyone's standards.

Or for the retro hardware enthusiast we have a SEGA 16 bit gaming computer which should spark a conversation with anyone between 30 and 4 years old on Daly Thompson's Decathlon, Horris goes ski-ing etc (Ok I actually had a ZX spectrum).
I found these over at GeekStuff4U, which, alas, looks like it's a company based in Japan. But if enough people leave comments saying they like them, we'll see if we can buy one to give away. We're lovely like that. Yes.