I'm always afraid to use originals, no matter what they may be.
Mom has all the little cards/trinkets, etc. from their 50th Anniversary to do as she pleases. I wrote a very short fairy tale about the celebration and made a small book for them with a few pictures and CDs of the pictures we took.
I wasn't quick enough...but kelseymel has a great idea. I might think to do it in 2 12x12 pages...with a space in the middle or somewhere on those pages, so you can put either a journaling piece or a pic or two.
If you don't want to adhear them to the page you could use photo corners so they can be easily removed later if needed. This is what i do with originals of things I might want to eventually take out of the book.