Australia has one of the most urbanised and diverse populations in the world, but there is little research that explores fleeting friendships between marginalised/racialised ethnic minority and indigenous populations. In contrast to metropolitan cities in white settler societies that have been the focus of much research, this paper focuses on the small, tropical city of Darwin in Northern Australia. This is a city that is at the centre of public debates on indigenous wellbeing, migrant integration and asylum seeker policies, with social welfare programmes that provide little opportunities for hopeful encounters among indigenous peoples and ethnic minority newcomers in surface spaces. I argue, however, that 'grass root' forms of creativity in an 'underground' car park bring their affective worlds together through a shared passion for art. The paper draws on gentle methodologies including participatory visual methods to privilege non-Western ways of inhabiting place. Through a 'quiet politics' and affective engagement with spacetimes both proximate and distant, the paper shows that it is possible to invoke different futures and crystallise experimental publics in the diverse city. The paper responds to a call to push the boundaries of urban research on social difference through geographies of friendship that are yet to engage with multisensory bodies, emotion, affect and art.