C is for...Cards
You never know when you're going to run into your next biggest fan. Or an agent interested in your work. Or a reporter on a deadline looking for a good story. Or...well, you get the idea. The point is, opportunities to get your book in front of readers could strike any time, any where.
If you want to make sure those important people don't walk away and forget your name two minutes later, you need to give them something physical to take with them. You need business cards.
There are plenty of places such as VistaPrint or Moo where you can get attractive and affordable business cards loaded up with all your crucial information. Make sure the card matches your brand and provides the holder with all the ways to get in touch with you such as your website, Twitter account and email address.
Don't forget to always carry some on you and hand them out. Business cards won't do you any good if you only stick them into fishbowls to win a free lunch.