Just so you know, the composition notebooks do come with dividers too. I bought some at Target along with the 'regular' comp notebooks.
Could you make your own with a notepad on one side, and maybe those ID tags (the clear ones that people here have been making mini scrapbooks out of) attached to the other side of the notebook? Maybe make it out of a file folder (there is a tutorial on here with a mini legal pad on one side and a folder pocket on the other - you make them out of regular file folders).
Or could you make something similar to this
Tutorials at Splitcoaststampers but instead of having card stock coming down, maybe clear envelopes or page holders (the small sized) to store the scraps and stuff in?
Maybe you can do an internet search and see if there is something sold that you can mimic and redesign? Sounds like a fun project though. I hope you get it figured out.