The truth is that assistants and coordinators aren't supposed to get business card.
And what was I supposed to these people? "Oh, I'm sorry Mr. Important Businessman, I'm not important enough to be given business cards" or "I'll write my info down on this paper for you, Ms. Potential Intern." I definitely don't want my interns thinking I'm not important.
Shortly before the new year, I built up the courage to ask my boss if I could have business cards. I walked into her office with my serious Working Girl face and said I had a few things to talk to her about. The first was that I wanted to work on a specific project (which is not TBD because the project may or may be happening) the second and third that were that I wanted business cards and a Blackberry.
Today, I got the business cards. When I asked for them my boss said "Just order them. You should have them." Now, I feel so legit. They are cute and colorful with my name on them and I love them. It's amazing that a little card can make me a little bit more important. Now, instead of running as fast and my heels can take me out of the conference room, I'll trade business cards with the rest of 'em.
...I'm still waiting on the Blackberry.
(not what my business cards look like, just a fun example I found here)