Abstract: Various embodiments of a modular tool storage system including one or more shop storage device is provided. The devices include coupling devices, such as male couplers, to couple the device to other components within a modular storage system.

Abstract: A beverage container cover assembly is provided that is configured to enclose a beverage within a beverage container. The beverage container cover assembly includes a lid, a lid cover, and one or more magnetically-interfacing elements that bias the lid and lid cover with respect to each other. The beverage container cover assembly includes a biasing interface between a lid and a lid cover to bias the lid cover to remain stationary with respect to the lid.

Abstract: A mobile storage device that includes one or more coupling mechanisms. The mobile storage device includes one or more wheels coupled to one or more housings. The mobile storage device can be used on construction sites to help workers move and hold tools, equipment, and other material. The one or more coupling mechanisms are configured to engage with storage units, such as storage units within a modular system.

Abstract: A container, such as a beverage container, is provided. The container includes a ledge surface that projects away from a bottom surface of the container. The ledge surface is configured to interface with ribs projecting over a recess in a unit, such as a tool storage unit.