You will be amazed by the stack of business cards you will accumulate. You will want to keep them organized, as you may want to go back to them often.
I used a Business Card holder as I often carried them with me, so I could allow the person I was meeting with to look through them to see if there were any connections of interest. This was especially useful for fellow candidates.
Many people use business card scanners which pull the relevant data off a card and put it into electronic contact data. This is a great way getting that data to your contact lists, phone, etc.