These “ice cube trays” for the Milwaukee Packout low profile organizers have 8 slots, each easily labeled. There are two versions – one for the center row and one for the outer rows, the difference being the shape of the lid. The organizer lids have some flex, so you cannot expect these bins to retain M2 washers, but I believe these bins to retain small parts better than the factory bins.

Other ice cube trays:

2x6 center bins: https://makerworld.com/en/models/168367#profileId-184845

2x6 outer bins: https://makerworld.com/en/models/180476#profileId-203340

2x3 center & outer bins: https://makerworld.com/en/models/247194

A lot of design work & filament went into these models. Please ‘Like’ and download. Message me for additional slot options.