This article explores sleep among kindergarten infants and toddlers. Although the collective order of sleep in kindergarten makes it a relational issue, the search here is for relations that extend beyond human actors and beyond the idea of the pram as a sleep container used by a sleeping subject. Here, sleep is seen as entangled with bodies and prams; it has a rhythm and a tempo, as well as the power to challenge the capitalist call for productivity. The article addresses sleep in terms of spatial configurations and contextualises it within a web of political relations rather than as a leftover of life. Informed by Foucault's notions of heterotopia, the article characterises sleep as a world within a world, drawing attention to relational principles and material-discursive spaces that are characterised as "different", on the understanding that sleep is not an intermission from life or relationships. Moving beyond the conceptualisation of sleep as a health and medical issue, it is reframed as embodied and embedded, enabling exploration of sleep in kindergarten as relational.