Here's a review activity for Lessons 8-13. Students compete to find sentences in their textbooks. Less time-efficient than normal worksheets, but students certainly enjoy it more. It took a whole lesson to do the worksheet, check it and the then do the followup activity.
Note: Some pictures are slightly different (the ones with the hats). I got them from screen grabs of the electronic version, without realizing that the books don't have those things. So tell your students or they'll probably be confused.