Make a coping strategies wheel with skills to help manage emotions. Kids make their own individualized wheels for activities like positive thinking, breathing, listening to music, yoga, and more. Great activity for counseling or small groups.
A big part of what we do with children is teach them safe and appropriate ways to cope and express themselves. This can help provide concrete examples during times when it is difficult to "find" a coping skill.
Bucket Fillers and Bucket Dippers - a fabulous book - Myrah learned about this in her Kindergarten class. Then at home she'd get in trouble and yell crying, "MOM! You're NOT filling my bucket!" lol - well no, I disciplining you dear daughter.
A Self- Esteem Checklist. I don't relieve believe in the terminology "self-esteem", for me, it's more like "self-worth", but this list can be helpful to get a better understanding of an individual's view of themselves.