Mind Yeti - Youtube channel with a library of guided mindfulness sessions that help kids and their adults calm their minds, focus their attention, and connect to the world around them. Also available in Spanish.

Calm App - Mindfulness app/website with free options. Paid subscription for premium access. 

Smiling Mind - Free mindfulness app/website designed for children and the whole family (age 7+)

Mindful Schools - Offering free mindfulness classes for kids on Tuesdays, Wednesdays, and Thursdays at 12:00 (CST)

Counselor Kirk's ABCS of Mindful Moments

Yoga with Adrienne For Kids - Adrienne is popular with adults but has great videos for kids as well on her free youtube channel.

Cosmic Yoga - Free yoga and mindfulness for kids ages 3+

Yoga for Kids - Free yoga videos

Smiling Mind - Smiling Mind is a great mindfulness app/website for the whole family (Age 7+)

100 free coping skills for kids (Worksheet)

Coping Skills for Kids- Resources for calming anxiety, managing anger, deep breathing exercises, etc.

Lazy 8 Breathing Visual