I have created insert compartments for the L-boxx mini, which close almost perfectly on the lid of the box so that no small parts can get into the other compartments. 

My smallest parts are about 1x5mm in size and stay in their compartment (see picture).

I have created the left / centre / right part on one printing plate, if you only want one box, simply deselect the others.

If any box combination is missing please contact me.

I have not created compartments smaller than 2, as these can also be created with the original L-Boxx dividers.

Materialwise PLA / PETG / ABS  should work fine.