The German designer Reinhard Dienes has created the Tonic bookshelf, an original creation with which we can change furniture whenever we feel like it. Why? Because it is assembled and disassembled without the need for screws or any type of tool, since in each of the corners it has holes where the legs are inserted, so that they can be put on and removed as many times as we want.
In this way, we can use it horizontally and have a simple sideboard, or vertically and get a shelf. In short, adapt to different life situations and our possible changes of opinion (which often happen often). In this way we will not have to buy a new piece of furniture, just turn it around.