The devices demonstrate individual and collective musical agency i.e. an ensemble has capability for feedback and interaction that might be perceived as communication. The self-contained sounding capabilities (having inbuilt microphones, processing circuits and loudspeakers) allows the agents to operate independently and to be positioned spatially as sound sculptures, thus adding a further behavioural independence and a spatial dimension to the project. In attempting to imbue physical devices with interactive capabilities this work extends the boundaries of new musical practices and help us better understand musical agency.