Using a galvanic vestibular stimulation interface that can affect the sense of balance, the authors devised an interactive experience that deals with the subject of identity in modern society. The participant wears the interface and walks while holding a bowl of water on which a figurine is floating. Since the figurine is linked to the interface, it serves as an externalized metaphor of the user's sense of balance. This experience provides an opportunity to observe the relationship between the individual self and the outer world with a broader framework.