I'm sure someone else will know more about this than me but there's a specific brand of fishing tackle box / tool box that has compartments that perfectly fit several commander decks.
It's the Stanley 10-Compartment Deep Pro Small Parts Organizer - costs about $15 and can hold a lot of decks - I currently have 14 decks in one. I don't double-sleeve, but there's a lot of extra room in the cups.
2023 Average Peasant Cube|and Discussion
Because I have more decks than fit in a signature
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