Hilary Hayes, an industrial design student at the Ontario College of Art & Design (OCAD) in Toronto, Canada, has come up with a smart scarf that boasts a dynamic light pattern which depends on your breathing. A LilyPad temperature sensor will play nice with the LilyPad Arduino, while power supply modules ensure that the scarf is well juiced to perform as intended. The temperature sensor itself is located near the mouth, allowing it to pick up the temperature variations which is then translated by the LilyPad to various points instead of the standard degrees measurement, making this scarf wearable even when it is not during chilly winter months. All the LEDs in the scarf will fade in and out in sync with your breathing, making you look way cooler than you already are. We do wonder how long the batteries will last though.