Packaging, use of a packaging and method for assembling several packaging

A packaging for receiving a filling material, the packaging comprising

• a filling material compartment, for receiving the filling material, having a total length defined between a first side and a second side of the filling material compartment and a total height defined between a top side and a bottom side of the filling material compartment, wherein the top side comprises a latching groove that extends across a majority of the total length of the filling material compartment, the first side extends from the top side to the bottom side of the filling material compartment and comprises a guiding rail that extends across a majority of the total height of the filling material compartment, the guiding rail comprises a up-pointing inlet opening adjacent to the top side of the filling material compartment and a latching groove is provided on the first side of the filling material compartment adjacent to the bottom side of the filling material compartment, and
• an additional compartment for forming an additional volume separated from the filling material compartment, wherein the additional compartment comprises first and second portions extending in different directions,
• wherein the additional compartment is moveable along a first fastening direction for fastening the additional compartment to the filling material compartment,
• wherein the additional compartment is fastened to the filling material compartment via a first fastening means and a second fastening means spaced to the first fastening means both in the first fastening direction and a second fastening direction that is crosswise with respect to the first fastening direction, wherein the first fastening means and the second fastening means lock two different detach directions comprising the first and second fastening directions, and
• further wherein, when the additional compartment is fastened to the filling material compartment, the first portion of the additional compartment covers the top side of the filling material compartment and the latching groove and the second portion of the additional compartment covers the first side of the filling material compartment and the guiding rail.