Described herein are various coupling systems to be used with storage units that are selectively coupled and decoupled. The coupling systems may be used with storage units that are stackable and/or transportable, thus allowing the storage units to function well within a large stationary environment, such as a basement, and also for a subset of the storage units to be selected and easily moved to another location.

Described herein are various coupling systems to be used with storage units that are selectively coupled and decoupled. The coupling systems may be used with storage units that are stackable and/or transportable, thus allowing the storage units to function well within a large stationary environment, such as a basement, and also for a subset of the storage units to be selected and easily moved to another location.

The invention relates to a packaging comprising a plastic container (2), comprising side walls (20, 21, 22, 23) meeting in corners (24), an upper opening (25) and a bottom (26), as well as a detachable plastic lid configured to cover the upper opening of the container (2), and wherein said side walls (20, 21, 22, 23) of the container are divergent, together forming a truncated pyramid, configured so that said container can be stacked in an identical container. According to the invention, said container has projecting portions (29) extending from side walls at the upper opening (25) of the container, said projection portions (29) being external to the container, configured to guarantee a constant stacking pitch between the container (2) and said identical container, when said container is stacked in said identical container.

Described herein are various coupling systems to be used with storage units that are selectively coupled and decoupled. The coupling systems may be used with storage units that are stackable and/or transportable, thus allowing the storage units to function well within a large stationary environment, such as a basement, and also for a subset of the storage units to be selected and easily moved to another location.