This is the most mini box I have, and probably the most valuable...
It's a small, watertight Plano box (probably meant to keep fishing gear), with three latches. I mostly picked it because of the latches, doesn't really need to be waterproof for my usage. And, made in USA!
It's dedicated to spare pins for my Honda walk-behind snowblower, and got used (again) tonight. Also houses a dedicated Kobalt 10 mm reversible ratcheting wrench (I keep that plastic tag on there to help me find it if dropped in the snow, especially at night, OK I'm weird...).
The Honda shear pins are crazy soft, I rarely know what I hit to break them. Better than bending / breaking more critical components, of course.
Mike