"Fluxus-øer" ("Fluxus Islands") is an introduction to Fluxus that takes German gallery owner René Block's collection, that the exhibition "Food for Thought" at Sukkerfarbrikken in Stege (Møn, Denmark) presented a selection from, as its point of departure. The article describes Fluxus as a heterotopian formation in the sense of French philosopher Michel Foucault's "Of Other Spaces" (1984), a space that situates itself within and outside society at the same time and that can be used to critique society and think it anew.