Humanistic sandtray is an integrative model of sandtray processing based on elements of Gestalt and person-centered theory and, like many expressive arts approaches, can assist supervisees in developing self-awareness in order to mitigate countertransference issues. In this presentation, we aim to educate attendees on basics of the humanistic sandtray approach and provide guidance on use of sandtray in supervision to assist supervisees in self-awareness surrounding issues of the therapeutic relationship.