Commander deck boxes made to fit in a Stanley tool case.  The Stanley can hold 13 deck boxes with a little extra room for things like dice, tokens, or planechase cards.

As shown in the pictures it can also be used to hold 8 decks on the sides and use 6 typical deck boxes to perfectly fit in the space.

Using the containers the Stanley tool case comes with it can hold 12 decks with much wasted space.

Version 2 includes tabs in the top to ensure the top cannot just slide out when the deckbox is stored on its back.