Something else I do is every night before bed, I write in this book. It's usually something Charlie did during the day, something I'm thinking about. It's easy. And it's a great reference too when I am scrapbooking, say I'm doing a page about when he was 8 months old and I can't remember a detail, I can go back to this book and look back at that point in time.
Lastly, I have all of Charlie's photos developed in wallet size. I don't scrapbook all of them (the ones I do plan on scrapbooking, I usually print in a larger size), but the ones that don't get scrapbooked get put in these baseball card holders. They fit perfect into my album from American Crafts.
I hope this gave you some ideas for things you aren't already doing to save some of your memorabilia...I'd love to hear any ideas for what you do too. Have a great weekend, everyone.