Packing cubes and camera inserts are pretty straightforward in terms of their purpose. But as an anxious packer who obsesses over making sure that everything is in place, using these packing tools revealed a hidden benefit.

At first, packing cubes and camera cubes seem to have only the benefits that they physically offer, which would be having dedicated compartments for different kinds of things. Camera cubes are there for objects that need a lot of padding and internal dividers, while packing cubes are there for personal items like clothes and other travel essentials. But as I...