I standardized on Sortimo t-boxx for our workshops:
https://www.mysortimo.us/en_US/Storage-Bins-%26-Boxes/T-BOXX...
... and although the insert colors changed, the architecture and sizing has been constant for more than 15 years ...
Sortimo is a bit large for my needs (or at least what is readily available at a reasonable price here in the States).
I like T-Boxx, but they get very expensive (+€60, without accessories), and as I'm not using them commercially, it doesn't make sense for me.
Meanwhile, among others, I've placed alerts for their L-Boxx Mini, so I buy a couple of them each time they go €8 or less. (Less than 8 is unusual, but around 8 is possible)