As a child I read books, morning, noon and night - even the cornflake box was read over and over again.
I had many favorite books at different stages of childhood. On recall now, to answer this question, one little book comes to mind, which was read many, many times. It was a book suitable for the 8- 10 year old reader. It was called 'The Adventures of Mr. Pinkwhistle', a kind of magic manlike creature who would help people in trouble and bring solutions to their problems in a very subtle, hidden invisible sort of way. I really liked that concept of quiet hidden executed help.
The book was from a series written by a famous English childrens' writer - Enid Blyton. She had many publications and series to her credit, all of which I loved and followed each series avidly. I managed to keep one of the Pinkwhistle books and presented it to my children, who were not a bit impressed! The book finally became torn, with pages missing. We moved house a lot and the tattered copy disappeared eventually - probably thrown out by some sensible helper in a house move.
Never to be forgotten, though, are the glad feelings invoked by the doing of good - quietly hidden.