For younger readers (ages 4-8):
* Where the Wild Things Are by Maurice Sendak: A timeless story about a boy's fantastical journey to an island of wild creatures.
* The Very Hungry Caterpillar by Eric Carle: A simple but engaging story about a caterpillar's journey to becoming a butterfly.
* Corduroy by Don Freeman: A heartwarming story about a stuffed bear searching for his missing button.
* Click, Clack, Moo: Cows That Type by Doreen Cronin: A hilarious story about cows who learn to type and demand better working conditions.
* The Giving Tree by Shel Silverstein: A moving story about the unconditional love between a tree and a boy.
For middle-grade readers (ages 8-12):
* Charlie and the Chocolate Factory by Roald Dahl: A classic tale of a young boy's visit to a magical chocolate factory.
* Matilda by Roald Dahl: An empowering story about a young girl with extraordinary abilities.
* The Chronicles of Narnia by C.S. Lewis: A series of fantasy novels about children who enter a magical world through a wardrobe.
* The Boxcar Children by Gertrude Chandler Warner: A series about four siblings who live in a boxcar after their parents die.
* The Magic Tree House by Mary Pope Osborne: A series about a brother and sister who travel through time in a magic tree house.
For older readers (ages 12+):
* The Lord of the Rings by J.R.R. Tolkien: A classic epic fantasy about a group of hobbits who set out to destroy the One Ring.
* The Hunger Games by Suzanne Collins: A dystopian novel about a young girl who fights for her life in a televised battle to the death.
* Percy Jackson & The Olympians by Rick Riordan: A series of fantasy novels about a young boy who discovers he is the son of a Greek god.
* A Wrinkle in Time by Madeleine L'Engle: A classic science fiction novel about a girl who travels through time and space to rescue her father.
* The Book Thief by Markus Zusak: A moving story about a young girl who steals books during World War II.
It's important to remember that these are just a few suggestions. The best children's fiction book for a particular child will depend on their individual preferences. I recommend visiting your local library or bookstore and browsing the shelves to find something that interests them.
You can also check out online resources like Goodreads and Common Sense Media for recommendations based on age and interests.