At the same time whimsical and thought-provoking, Fluxus explored everyday life as an object of art. Behind mundane materials and activities, we find a large network of Fluxus artists who worked together for decades to create and share their art. This publication builds on archival materials that expose the nature of the artists’ working relationships, and methods for collaboration and circulation of artworks. It traces both people and things, exploring how the network expanded and was made solid, from Fluxus’s conception in the 1960s, to the 1990s, when it had eventually left its stealth flight under art history’s radar.