Personal Storage Box

The Personal Storage Box is (as the name implies) a container for strictly personal storage. It cannot connect to machines or belts in any way. It has 25 storage slots for items (one more than the Storage Container) and uses approximately 5% of the floor space of the Storage Container, making it considerably more space efficient than the Storage Container.

Trivia

 * The Personal Storage Box is the second smallest building in the game (excluding belts).