I can't remember the last time I scrapbooked a 12 x 12 layout. It's been at least a year or longer *gasp*. I started out as a 12 x 12 scrapper many, many years ago, and I have forgotten just how much I love it!
I try to keep my layouts simple, and put the focus on the photos. I don't do a ton of journaling, but I always put a date and/or date and location/event. If I feel like journaling, I'll journal on the back. Sometimes I want to tell the story for everyone to read, so I'll journal on the front page. I keep my 12 x12 pages simple and leave all the fun "out of the box creativity" for my mini books.
Here are a few layouts I worked on.