This is a box (container) for this calibration weights set: https://smile.amazon.com/gp/pr... which includes 1g, 2g, 5g, 10g, 20g, 50g, and 100g weights + metal tweezers.

It includes a space for the tweezers and should store the weights in a relatively dust-free environment for long-term storage (I mean, how often do we need these things? haha).

It does use more plastic than I'd hoped but it's only about a dollar's worth and still cheaper and faster than ordering a more expensive (and not quite as high quality) set of calibration weights that *does* come with a box =)