Modular shelf
The Big El by Konstantin Slawinski is a modular shelving system that can be put together individually. The basic form of the module gave the shelf its name and recalls a big L and can be combined versatilely with other modules. The big El can both be used for simple storage of books and magazines, it can be configured as spacious side table or put together as a generous shelf or sideboard.
In addition, the powder-coated steel shelf is magnetic, so that notes, photos and other reminders can be attached to it easily.
Apart from the big variant you can see the modular design of Knut Völzke here, also available as a smaller model.