This is the folio I got at Target
; it's HUGE and it has several high-quality pockets and whatnot bound in. It's a great size for what I'm using it for, to document my relationship thus far, and I can even fit a mix CD in a plastic jewel case my boyfriend made me for Valentine's into a pocket. That to me is way cool, because I can easily access it down the line and have a soundtrack to the entire smash book.
There's also a cute thin paper envelope bound in and I used it to collect ALL the movie ticket stubs I have for us. I smashed a few that had fun stories, then put the rest in the envelope. Love that!