The spare exchange is an intervention of everyday life, and a practice in empathy. The spare exchange gives out buttons to the homeless of Boston with a simple smiley face that reads “thank you for your kindness” Most Charitys seek to give to the homeless, but the spare exchange allows the homeless to give back, putting a smile on the face of those who choose to be kind. The spare exchange is accompanied by a mobile site which allows people to quickly donate to local organizations through their phone.