Teresa Almeida designed Space Dress, which makes a comment on personal space in public places. It was originally designed for rush hour in New York City's subway system to help relieve stress and claustrophobic situations. The dress inflates based on the user's decision. As it inflates, people around you would be pushed away, increasing your sense of personal space, especially in crowded situations.
What I like about this is its simplicity in concept and aesthetics. Almeida's prototype proves the function and behavior while discretely hiding the componentry so that the experience is focused on the behavior and gesture of the dress in its environmental context.