Thanks to @Lineagekeeper for the tweet on some free digi-papers for genealogy scrapbooks. These are five amazingly cute, free! family tree charts available from ObituariesHelp.org. (Although they are not large enough for a 12x12 page)
While you're there, check out the rest of the website. There are a number of ideas and resources for scrapbookers and genealogy researchers. While viewing the scrapbook pages, utilize the pulldown menu to see a large number of family tree charts. Bookmark this!