Well, you can turn all those pages into envelopes so that you have something to stick your beautiful cards into when you're ready to deliver them! :)
How freakin' COOL is that?!?
Here's an example of what these envelopes look like.
Here's the tutorial on how to make your own! These are absolutely Simple & Sweet. :)
Catalogue Envelope Tutorial
If you decide to make your own, please leave a link to your blogs in the comments below! I'd love to see how they turn out! :)
EDIT: Some people are having trouble viewing/downloading. I was able to load the pdf to my site, so you can direct download it from here.