I like Kabongs organizer, however, it doesn't fit the 5th Anniversary Edition (cards are bigger and they have plastic money).
This case will hold the base game and the two expansions (Harbor and Millionaire's Row). Also, it will hold 5 pairs of dice since the game plays up to five. Finally, there are five separate slots for the players cards. Since the number of players determine the number of major establishments, I include one of each type of major establishment with the player's cards. That way, you pull out the number of player packs and include the building in the deck. Keeps it simple.
The only slight issue I had is the slot only holds 14 renovation tokens. I just lay the 15th one on top of the cards.
The whole case fits in the box. When travelling, I take the case out of the box to save it from wear of travel.