A storage system is provided with a support panel, having a plurality of sockets, and one or more support members, having mounting posts for engagement within the sockets. Nodules extend from the sides of the mounting posts that are received within recesses formed in the inner walls of the sockets to secure the mounting posts within the sockets. A modular design permits a plurality of support panels to be joined at their edges, to form a larger support panel, or to engage the edge of one panel with the face of another panel to provide a storage shelf. In one embodiment, a horizontal platform and vertical handle both provide surfaces for receiving support members while permitting the device to be mobile.