The TipsyBadge is a $100 DEF CON badge that applies low-current galvanic vestibular stimulation behind the ears to alter balance and eye position; demos showed calibration, wobble and left/right steering modes, and induced nystagmus/nausea at higher intensities. It also includes LED modes, a Stroop color game with zap-based reinforcement, and USB mass-storage support for custom images, with potential VR/entertainment applications and safety considerations.