From the Latin word for "patchwork," the cento (or collage poem) is a poetic form composed entirely of lines from poems by other poets.
https://poets.org/glossary/cento
https://theversesmith.blogspot.com/2022/04/f-found-poetry-cento.html
How to write a cento poem: Patchwork poetry for teens
BY KIM KAUTZER | JUN 19, 2008 | POETRY
https://writeshop.com/writing-cento-poetry/