Consider a separate space in classrooms for students to take a break. Set a timer. Have stress balls, books, paper, crayons, etc. Consider using color/smell/sound so that stress management is a multi-sensory experience.
MAKE IN GROUP FOR SELF-SOOTHE BOX Ideas for various squishy balloons. If E could take a walk outside with an adult and fidget with one of these, would it be enough to help him reset? Also, how about a matching activity where he would guess what is inside?