'Take away the A' by Michael Escoffier and Kris Di Giacomo
This book is fun! The premise behind it is a word game. Can you take away a letter from a word to make another? For example if you take C from Chair you get her. If you take S from She you get He.
The authors have managed to find an example for every letter in the alphabet.
(there are some examples below) and create amusing sentences out of them.
This could be a great challenge for your class - perhaps as a game to play with their spelling lists.