Posted on a thread that asked how people organize their carts and here's how I do it =)
Just a basic tackle box from Walmart. Labeled by type in alphabetical order.
Since I have CDS I don't need the overlays much. Original books and overlays are stored in photo boxes. Booklets were printed and organized (again in alphabetical order) by type =)
I have labeled the carts and tab dividers in my binders. If anything is missing, I can tell right away by flipping through =) Very proud of my collection here hehe.