Worksheetless Grammar

Worksheetless - the absence of worksheets.  That's my definition at least.  This would be my preferred way of practicing grammar and most everything else for that matter.  For example, we've been learning about apostrophe s.  A recent big book of ours called Uncle Buncle's House provided the perfect opportunity to practice the skill.  We created a book as we often do.  Each writer used apostrophe s at the end of their name and drew something special that belonged to them.  (Yep, that's me in Hailey's picture.  How sweet.)

In order to help us learn about homophones, we made the following book about "to" and "two."  On one side of the paper the child wrote, "I went to..." and on the other "I have two..." 

What other skills could I teach using the creation of a classroom book that will be in the hands of little learners over and over throughout the year?  I'm thinking the options are quite endless.