Collapsible shelving units and collapsible enclosures

A covered shelving assembly for storing items, comprising:

• a first collapsible shelving unit and a second collapsible shelving unit that are spaced apart from each other and each include:
• a first collapsible frame that includes pivotally connected frame members in a lazy tongs configuration,
• a second collapsible frame that includes pivotally connected frame members in a lazy tongs configuration, wherein the first and second collapsible frames are extendable and collapsible in unison to move the shelving unit between an extended position and a collapsed position,
• a plurality of shelf support rods each having a first end connected to the first collapsible frame and a second end connected to the second collapsible frame, and
• a plurality of shelves that are each removably supported by a pair of shelf support rods from the plurality of shelf support rods, the plurality of shelves including a first shelf that is removably supported on a corresponding first pair of shelf support rods from the plurality of shelf support rods at a first elevation and a second shelf that is removably supported on a corresponding second pair of shelf support rods from the plurality of shelf support rods at a second elevation;
• a first cover support having a first end connected to the first collapsible frame of the first shelving unit and a second end connected to the first collapsible frame of the second shelving unit, and
• a second cover support having a first end connected to the second collapsible frame of the first shelving unit and a second end connected to the second collapsible frame of the second shelving unit, and
• a flexible cover that substantially encloses the first shelving unit and the second shelving unit is supported with respect to the shelving unit at least in part by resting a top surface of the flexible cover on the first cover support and the second cover support when the first shelving unit and the second shelving unit are in the extended position to elevate the top surface of the flexible cover above the first collapsible shelving unit and the second collapsible shelving unit, the flexible cover having an openable panel, wherein the stored items can be covered within the flexible cover or accessed by opening the openable panel.