Not zentangle exactly, but this idea might appeal to those who love to tangle and doodle. It's done on a book page, bordering a section of text, and the highlighted words inside the main area make up a bit of verse. A creative idea.
Ask children as a group to choose their favourite page from a big book. Photocopy each element of the page and glue on cardstock. Children colour these. Then reassemble 3 dimensionally...i use mini marshmallows glued to the back bc they dry rock hard.