PLAY THERAPIST • TEDx SPEAKER • EDUCATOR • AUTHOR
Awakening Possibility through Connection
Creating experiences that inspire curiosity, connection, and transformation.
About Tammi
Tammi Van Hollander, LCSW, RPT-S™, RST-C/T, is a licensed clinical social worker, internationally recognized play therapist, Registered Play Therapist-Supervisor, Registered Sand Therapist Consultant/Trainer, author, speaker, educator, parent educator, and clinical supervisor with more than 30 years of experience helping children, families, therapists, educators, and organizations discover new possibilities through connection, creativity, and playful, experiential learning.
As the founder and clinical director of Main Line Play Therapy, Tammi blends neuroscience, expressive therapies, storytelling, creativity, playfulness, and experiential learning to help people look beyond behavior and better understand themselves and one another.
She is a founding board member of the World Association for Sand Therapy Professionals (WASTP), a TEDx speaker, and the author of The Bibliotherapy Toolbox, Casey's Greatness Wings, and The Loving Stop Sign™. She is also the creator of Greatness Sticks® and Greatness Cards®.
Today, Tammi brings these same principles to keynote presentations, professional trainings, retreats, consultation, supervision, and parent education—creating experiences that invite people to see themselves, one another, and life's challenges through a new lens of curiosity, compassion, and creativity.
The Stories We Tell Ourselves
Growing up, I often felt different. Anxiety and self-doubt were constant companions, and for a long time, I believed I was either not enough or too much. But then came the people who truly saw me—those who recognized strengths in me that I couldn't yet see in myself. That connection became my lifeline.
Through creativity, play, and movement, I finally found my voice. I learned that before real change can happen, the nervous system must feel safe. This understanding became the foundation of everything I do today.
Today, I help children, families, therapists, educators, and organizations strengthen relationships, move beyond limiting stories, and discover new possibilities through connection, creativity, and play.
Because when people feel seen, they begin to see themselves differently.
Experience in Action
TEDx Speaker
Helping audiences rethink the stories they tell themselves and discover new possibilities for healing, growth, and connection.
30+ Years Impact
Helping children, families, therapists, educators, and organizations discover new pathways for growth and healing for more than three decades
Retreat Facilitator
Creating immersive experiences that inspire reflection, creativity, connection, and transformation.
International Trainer
Training clinicians, educators, and organizations around the world in play therapy, sandtray therapy, and experiential approaches to change.
School District Impact
Training and consulting with therapists, educators, and special services teams to create more connected, supportive, and effective school communities.
Beyond the Therapy Room
What begins in a playroom often finds its way into books, therapeutic resources, and creative tools used by children, families, educators, support groups, and clinicians around the world.