Ebooks
Free to sign up for Ebooks:
Free weekly Ebook:
https://mailchi.mp/booklife/why-we-wash-our-hands-our-free-childrens-book-for-covid-991501?e=60b6ee9a8a
https://nosycrow.com/blog/released-today-free-information-book-explaining-coronavirus-children-illustrated-gruffalo-illustrator-axel-scheffler/
Reading eggs have a free trial at the moment.
Amazon also have a free trial on their audible books. Take care to read the terms and conditions of these though :)