I originally had a small binder. I replaced that one with this 3 inch binder. It is really nice. It is able to hold all our units beginning with Leif the Lucky, our Colonial Days history pockets. (that I resized to fit in this folder.).

I normally prefer spiral bound books. But for this larger project this has worked out great.

And If we decide to do a traditional folder lapbook for one of the units,

we can just punch holes in it and add it in.