I also loooovveee these sight word books. My students get lots of practice writing and spelling the words and they have fun in the process. I got them at Barnes and Noble, but they are also available online at Amazon too.
More freebies:
http://www.cherylsigmon.com/pdf/WordShapes.pdf word shapes for writing word wall words
http://www.cherylsigmon.com/pdf/LightningWordGame.pdf lightning word wall game
http://www.cherylsigmon.com/pdf/keyboard-4.pdf laptop sheet for "typing" word wall words
Don't forget to check out my Teachers Pay Teachers Store for Word Walls and the Dolch Sight Word pack!