Large-capacity modular holding container and related methods

A holding container including a load-bearing wall extending around a perimeter of at least one storage area, the holding container comprising:

• a plurality of pre-formed, releasably interlocking, load-bearing flat panels configured to form the load-bearing wall, each panel configured to be bent to form a portion of the load-bearing wall and wherein each panel is configured to at least partially overlap with an adjacent panel when forming the portion of the load-bearing wall,
• wherein the load-bearing wall is at least partially curved, and
• wherein each panel comprises at least one lip having a lip thickness less than a main body thickness of a respective panel and the at least one lip is configured to overlap with at least one lip of an adjacent panel to form an overlapped lip thickness substantially equal to the main body thickness of the panel, wherein each lip comprises at least one receptacle and, when two panels overlap, a receptacle of each panel aligns with a respective receptacle of the adjacent panel and the aligned receptacles are configured to receive a panel connector to fixedly couple the two panels together.