At Oregon Flock and Fiber Festival (OFFF) a number of the bloggers has half size calling cards called Moo Cards.
I was entranced by them and finally got mine the other day.
On the Moo Card website, you can upload your own photos, crop them to the card's size and then have 6 lines of printed info on the other side.
I love mine - lot's of fibery goodness on them. Can't go wrong for $25 bucks (total with shipping).
Now I need to get one of the little carrying cases I saw...