I've been looking for small parts bins for screws, hardware, and small electronics parts. The most annoying thing ever is to have a set of bins that don't match. I have stumbled across these bins from one of our local big box stores, and I really like the size, features, and overall cost.
These bins stack, they have a nice interlocking shelf system, and they offer a good variety of spacing options. The one thing that these smaller bins often lack are removable bins for small parts. This is almost essential if you're dealing with small nuts / bolts or other hard to grab items.
To remedy this, I designed a few custom bin bins that can be 3D printed. These bins each match the footprint of the various compartments. Additionally, I made a few split bins and a few nested bins that allow you to stack multiple small items for when you don't have enough washers or whatever to fill an entire compartment.
On-shape model is available for editing / modifying as needed.
The author hasn't provided the model origin yet.