I've had several beautiful journals that I justified buying from Barnes and Noble because of the dignified reason of recording a trip or something, but really, my favorite journal is my current one, inspired by Ann from Holy Experience. A dear friend introduced me to the idea, and I immediately began searching for the perfect medium to create such a diary.
Here are a few shots of mine, but for a better explanation of how to accomplish something similar, there is a tutorial at Holy Experience.
Unfortunately, I could only find a basic, textured, black journal, but the pages were made for this and I'm alright with a boring outside, because I know what's inside. I use a rolling tape dispenser that is typically used for scrapbooking, and works well for this.
This helps, because one of my favorite things to do is tear out what I like from magazines so I don't have to keep the whole thing. I hope to post some other time what I like to do with the rest of my tear-outs. It's kind of fun. :-)
I record what's going on in our lives, pray, write verses, lists, goals, quotes and anything else that I may want to remember. It's a good way to save pictures of fun ideas too. There are no rules.