If you are an organized person who just needs everything to be in its proper place without wasting space, then this might be an option for such a need. It is a single unit with multiple storage options [as you very well understand from the picture] as per requirement.
Based on its construction this shelf can be changed into different forms by pulling and pushing its different units. This product has been designed by Amsterdam based designer Martin Saemmer. It is small and compact and looks efficient in its purpose.
Due to the numerous compartments I have a feeling the owner might initially need a few days to remember which things have been kept in which part! Don’t you agree that this looks like a gigantic puzzle unit?