Kraftwerk issued their own pocket calculator synthesizer (2019)
Obligatory direct link to Kraftwerk's Pocket Calculator: https://www.youtube.com/watch?v=eSBybJGZoCUas an excuse to sideload a link to the Balanescu Quartet's cover of Kraftwerk's The Robots: https://www.youtube.com/watch?v=MRBPZl-Fmqk