Millennium blades vanilla inserts are pretty bad. My organizers are somewhat space efficient and provide a bit of in-game utility. I particularly like the side-loading money organizers since you can easily count and pull bills from the center taped area.
The first version of the card holders has tall walls (orange in the pictures), but pulling out individual sets is challenging and wastes filament. The shorter walls allow you to pull sets from the sides without having to take out the whole section. I included a support piece that helps prevent the game mats and rule book from possibly pressing down on the cards. I do not recommend using the tall walls.
The organizers are no taller than 60 mm so the game mats and rule book can sit on top.
My penny sleeves are 95 mm x 68 mm while a card is 89 mm x 64 mm.
The token lid isn't quite as snug as I wanted it to be at 200 microns. I recommend saving filament and printing the lidless version.
One of the pictures shows an example fit of set divider labels with about 1 cm headway found here: https://boardgamegeek.com/filepage/132430/millennium-blades-card-dividers
I do not plan on owning the MB set rotation or any expansions in the near future (the vanilla game has plenty of replay-ability), so I can't comment on how well this design accommodates them. I may re-design the organizers should I obtain any expansions.
Everything fits relatively snug with no bowing of the box walls.
I hide a pen behind one of the money holders :)
For more information on Millennium Blades, visit the developer website: https://www.level99games.com/
Thingiverse crosspost: https://www.thingiverse.com/thing:2563405