Abstract: Provided is a connectivity system for a utility module, including one or both of: a rigid base portion with at least one engaging tab projecting at a first edge portion of the rigid base portion, and at least one locking receptacle disposed at a second edge portion of the rigid base portion; and a rigid mounting platform comprising an upwardly extending perimetric rim defining a utility module arresting space, the rim being configured with at least one tab arresting receptacle at a first location, and at least one locking latch at a second location.

Abstract: Provided is a connectivity system for a utility module, including one or both of: a rigid base portion with at least one engaging tab projecting at a first edge portion of the rigid base portion, and at least one locking receptacle disposed at a second edge portion of the rigid base portion; and a rigid mounting platform comprising an upwardly extending perimetric rim defining a utility module arresting space, the rim being configured with at least one tab arresting receptacle at a first location, and at least one locking latch at a second location.

Abstract: A box, container, receptacle, cart, and toolbox include a bottom-side panel and four side-panels. A first side-panel includes a first reinforcement tunnel or reinforcement core, hollow or filled, located at or near the top edge or the top rim of the first side-panel. A second side-panel, opposite the first side-panel and generally parallel to the first side-panel, includes a second reinforcement tunnel or reinforcement core, hollow or filled, located at or near the top edge or the top rim of the second side-panel. The two reinforcement tunnels or core contribute to stability and rigidity of the device. An insertable or removable U-shaped handle complements the hollow reinforcement tunnels.