So, here is part 1 of my storage solution for Arkham Horror.
Box 1: ALL location cards of AH and all expansions in only one box.
Just open this box and place it on the table and all locations are ready for play.
So i have only AH and DH yet. But you can see, there is enough place for the locations of KH and IH as well (plus one bonus pocket). All pockets can fit ~40 cards, so they have enough room for all location cards from all existing expansions.
The next step is box 2 which have to fit all Mythos- and Gatecards plus the Investigator Cards. But i have to work this out before creating it.