We have a MiniDisc Player in our Technology through Time Collection.
Sony launched the MiniDisc in November 1992. Compact Discs had been already in use for a decade, but they hadn't taken over from cassette tapes as they were not as portable and convenient. The MiniDisc was designed to address that, being smaller and more portable. The MiniDisc had loyal enthusiasts across the globe, but never succeeded in its aim to take over from the cassette tape and compact disc.
In March 2011 Sony stopped any further development, and it finally stopped manufacturing by March 2013.