A performance art exercise that can be made by oneself or in groups:
Take a hand mirror
Hold it up and use it to reflect the world around you
Move it about and observe how your viewpoint is altered via the mirrors´ reflection
Begin to move, only viewing the world in the mirrors surface
Experiment with durations and environments, by yourself or in crowded situations where you can catch other peoples glances.
Kira O ´Reilly
From the “Performance Artist Workbook” Pilvi Porkola (ed.)