Most business gives you a business card to pass out to associates so they can get ahold of you again.  I am bringing what I call my calling card.  Originally, a calling card was left with the maid/butler to tell the owner who was at the door. 

My calling cards have my name, address, phone numbers and email on them.  It is an easy way to give someone your information.  This way they will be able to get in touch with you after the reunion.  There is never any paper and pens at these functions.

I print out the cards myself.  I brought some business cards in the label section of the an office supply store.  I know you can order 500 cards for $20 at some office supply location, but I not know that may people.  In addition, I will move before I use all them up. 

Remember there maybe someone you want to call or email later.  I will be bringing mine.