When Phaidon suggested that Jongerius create a limited-edition object to go with her new book, the designer took the idea as seriously as any other commission. As she recalls, “I was thinking, What to do? You can make a kind of non-piece, just an excuse to sell the book, but you can also take it as a way of making a project that is interesting for a longer time, a real research project.” (Phaidon is planning further editions with big-name designers.)