Toolboxes are containers used for storing items.
Toolboxes found in vaults are communally owned and are passed down from one generation to the next. The expectation of vault residents are that the toolboxes will be properly cleaned and maintained to ensure their survivability.
Gameplay
Can be found and used to store items within.
List of loot
Variants
Old World Blues adds an object called Greasy toolbox to Fallout: New Vegas, but it is identical to the “normal” variant aside from name and appearance.