Stanley Removable Compartment Organizers
We love using these plastic boxes to store small parts and tooling. We use them for holding small kits of prototyping parts that go well together, like pre-crimped wires and headers, small screws and fasteners, sets of taps, or specialized tooling that goes with a specific part. The most convenient feature of these, by far, is the fact that the bins are all removable. You can take them out when you're using them, reorganize at will, return them and carry the case without fear of them mixing with their neighbors.