I completely agree with Martin Schøyen (and others): anything written by hand is a manuscript, regardless of the medium. So all cuneiform tablets, all ostraca, all Mayan codex vases, all Lakota winter-counts, all Rongorongo boards, all runestones - they're all manuscripts. https://twitter.com/schrift_sprache/status/1293205840464424962

Four manuscripts.

Also manuscripts: Oracle bone inscriptions; quipu; Lukasa memory boards; churinga; cylcons; pre-contact Inupiak narrative drill bows; (probably) Mbuti barkcloth pongos; Coptic textiles with text (and arguably some others as well); Lampung 'typographic' skirts....