Abstract: Collapsible containers configurable to provide a plurality of seaparate compartments are described, each having a back wall (84) carrying elements (104B, 104C) hingeably movable from positions parallel to the back wall to positions extending normally of that wall and defining compartments. In one embodiment stackable rigid structures (formed from inter-engageable boarding pieces) are placed within the container with the movable elements located between pairs of structures. In another embodiment the movable elements are rigid and form (when extended) bases for trays and lie immediately beneath side supports hinged to the back wall and rotatable from positions parallel to that wall to positions extending normally of that wall to act as end (and possibly) divider walls for the trays.