Five anthologies target ages with birthday-party specificity. It's Fun to Be Five! (ages 5-7) and Now I Am Six! (ages 6-9) have eight stories each, by authors such as A.A. Milne and Rosemary Wells. It's Heaven to Be Seven (ages 7-10); It's Great to Be Eight (ages 7-10) and It's Fine to Be Nine (ages 8-11) each gather a dozen stories with black-and-white illustrations; authors include Judy Blume, Beverly Cleary and Roald Dahl.
Beverly Atlee Cleary was an American writer of children's and young adult fiction. One of America's most successful authors, 91 million copies of her books have been sold worldwide since her first book was published in 1950. Some of her best known characters are Ramona Quimby and Beezus Quimby, Henry Huggins and his dog Ribsy, and Ralph S. Mouse. The majority of Cleary's books are set in the Grant Park neighborhood of northeast Portland, Oregon, where she was raised, and she has been credited as one of the first authors of children's literature to figure emotional realism in the narratives of her characters, often children in middle-class families. Her first children's book was Henry Huggins after a question from a kid when Cleary was a librarian. Cleary won the 1981 National Book Award for Ramona and Her Mother and the 1984 Newbery Medal for Dear Mr. Henshaw. For her lifetime contributions to American literature, she received the National Medal of Arts, recognition as a Library of Congress Living Legend, and the Laura Ingalls Wilder Medal from the Association for Library Service to Children. The Beverly Cleary School, a public school in Portland, was named after her, and several statues of her most famous characters were erected in Grant Park in 1995. Cleary died on March 25, 2021, at the age of 104.
I don't think this worked very well ... random chapters of novels that seemed to just hang there. It may spur readers to look up the original books, but overall was kind of a mish-mash.