i don't know about a 7x7 scrapbook, as that is an unusual size.
are you a scrapper? you can either make something to bring with you, or what i have found is that i just use the $6.00 autograph books that i buy from disney. then after i get home i scan the autograph and include it on the pages. that way, you aren't stuck carrying around a larger item all day with you (what is ounces in the morning, feels like pounds the longer you are there), especially if you have more than one child.
there are many posts about it here, you could do a search on it. people have made paperbag albums, mini scrapbooks, etc on what to bring.
another good place to go to "see" stuff is twopeasinabucket.com. go to their peanut gallery, then click on view by categories, then scroll down until you see disney...click on that and there is tons, and i mean tons of stuff just devoted to disney...if that isn't enough, go back to the view by categories section and scroll all the way down to the bottom and click on theme parks and there will be more there.
you'll get lots of ideas here, there, and all over.
good luck.