Just a little interesting history:

The Ericofon, also known as the Cobra phone, is a one-piece telephone designed by the LM Ericsson Company of Sweden. The idea of creating a telephone in one piece was a long-standing dream of telephone makers, and Ericsson succeeded in making it a reality after learning about a German experiment by Siemens & Halske. The project, initially titled Erifon, was led by Hugo Blomberg and later involved Ralph Lysell, who is considered one of the pioneers in Swedish industrial design. The Ericofon marked a paradigm shift in telephone design with its compact one-piece design, integration of speaker and receiver, and a unique hidden dial. The phone was initially designed in 1941 but not manufactured until 1954, using the new thermoplastic ABS, which allowed for a variety of colors. The Ericofon's design, ease of handling, and colorful options represented a significant departure from the traditional black Bakelite telephones and signaled a shift towards viewing telephones as consumer products rather than just functional devices.