Container lid stackable with one or two smaller containers

A system of containers which form a group of two and a group of three containers, where one of the containers or two of the containers can be positioned on a lid of the other container so as to prevent sliding motion along the lid of the positioned container or containers, the system comprising:

• a primary container having a lid;
• two secondary containers, each of which has a bottom wall and side walls which extend upwardly from the bottom wall, the side walls comprising two opposed exterior long side walls, which are both longer than two opposed exterior short side walls, wherein portions of each secondary container bottom wall define an indentation which extends inwardly of the container, each indentation having two opposed short side walls and two opposed long side walls, the bottom wall indentation long side walls being longer than the bottom wall indentation short side walls, and wherein the exterior short side wall is shorter than the indentation long side wall;
• portions of the primary container lid forming at least a first raised structure and a second raised structure which extend away from the primary container, the first raised structure being spaced a maximum spacing on the lid from the second raised structure;
• wherein in a first group of containers, the two secondary containers are disposed on the primary container lid, and the first raised structure engages against both indentation short side walls of one of the secondary containers, and both indentation long side walls of said one secondary container, said one secondary container being thereby restricted from slipping on the primary container lid;
• wherein in the first group of containers the second raised structure engages against both indentation short side walls of another one of the secondary containers, and both indentation long side walls of said another one of the secondary containers, said another one of the secondary containers being thereby restricted from slipping on the primary container lid;
• wherein the first raised structure and the second raised structure maximum spacing is less than the length of the secondary containers exterior long side walls at the base, and
• wherein in a second group of containers the first raised structure and the second raised structure cooperate to restrain only one of the secondary containers from slipping on the primary container lid, by engaging portions of the first raised structure with one of said secondary container's short side walls and two of its long side walls, and the second raised structure with the other of said secondary container's short side walls and said two of the secondary container's long side walls.