Coach,
Funny you should mention that. I'm making a cigar pen desk set for a gift for someone. The problem with the brass/gold pen holders that Woodcraft sells is that the holes aren't the correct size for a cigar, so you're stuck doing as Tom suggested and actually making one yourself. If you look in my album, you'll see a picture of a primitive pen holder I made. That took me only slightly longer than a typical pen to actually turn (only because it was my first one), and I didn't have the drilling and glue-up time associated with pens. You could take my design and cut a notch in it using a bandsaw or table saw, and the business cards could go in there. Alternatively, you can use some square stock and cut a ridge in it, cut it in half, and glue it to the top of the pen holder.
Finally, you could try something like this http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=064-3100 or this http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=064-3200 or you could just do the business card holder as a separate thing, like this http://www.woodturnerscatalog.com/cgi-bin/shopper?preadd=action&key=050-7081
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