We have found and are offering a Single Box Organizer for the game Eldritch Horror
 
This organizer will fit Eldritch Horror and the Forsaken Lore, Mountains of Madness expansions.
 
There is some room for future as well, depending on what they add.
 
This set includes 9 pcs that can be used in Eldritch Horror Base game box

If you would like the pieces printed in different colors just let me know what colors you would like in the comments section of your order