I would want to buy blank puzzle pieces and have each child decorate a piece or write their name, then it would be a finished puzzle! Back To School Craft and Bulletin Board Idea Could be a fun team building activity/ice breaker.
Consonant blends and consonant digraphs are very useful and are important for the students to know to be able to sound out more complex words. I believe having them all over the classroom and using them as decoration around the classroom is going to help the students learn them. This helps the students with their letter association.