Last time I went travelling, I met a couple who had "travel" cards, like business cards, with them. Instead of writing their info in your journal, or on a piece of paper you either lost or couldn't read, they handed these out instead.
I know our trip isn't a long duration, but when I remembered this couple, I thought it was a good idea. And being the organized person that I am, I decided to make some as well.
Lol, I know I can be a bit of a dork! :)