Feeling faces are great for little ones that have a hard time finding the right word to describe their emotions. It works great with a feeling journal to help them learn what the feeling is and what the facial features might be in each situation.
The happy rocks are like the gem jar. They can be used as positive reinforcement. Every time the class does something positive as a whole class rocks can be added to the jar. When the jar is full, a reward can be given to the whole class.