Wonderland, Oz, Lemony Snicket, Harry Potter, Ronald Dahl, what else?

If you like Peter Pan, you could try one of the sequels. "Peter Pan in Scarlet" was authorized by the hospital that the original author gave the rights to. The "Peter and the Starcatchers" prequel series is very popular, though it reinterprets things a bit (like trying to explain pixie dust). "Peter Pan and the Only Children" is a fairly old one that tried to stay very close to the style of the original.