Libraries are unfortunately closed, but there are many online resources:
Stories and rhymes in many languages
Rhymes for children
JUKIBU: Höre deine Sprache (Listen to your language) – click to hear nursery rhymes and songs in different languages / Geschichtenbaum Online (The stories' tree - videos in 6 languages)
Die Versdatenbank des SIKJM: Verses in 14 languages and individual nursery rhyme-films
Kinderverse der Elternbildung CH: 42 Verses in 12 languages: order DVD and Booklet or see them on YouTube
Site web Mama Lisa: Rhymes and songs in many languages
Buchstart Hamburg: Children's rhymes in 8 languages
Stories for children
Picture books by Silvia Hüsler: Translations in more than 20 languages
Library in Vienna (kirango.at): Stories in different languages
Conte-moi la francophonie: Stories from Algeria, Morocco, Mali, Haïti etc., in French and local languages
Grimm's Fairy Tales in many languages
Andersen's Fairy Tales in different languages
International Children's digital Library
Childrens-books-bilingual.com «Sleep Tight, little Wolf» in 64 languages and «The Wild Swans» in 45 languages (audio version available)
Poetry for adults
Lyrikline: 10'000 Poems by more than 1200 poets in 78 languages