For the past few decades, childhood studies have sought to make pressing challenges regarding children's voice, agency and mobility perceptible. This quest has made childhood studies both a melting pot of concepts and ideas often adapted from other disciplines and a field known for methodological experimentation and innovation. Peter Kraftl's After Childhood continues along these lines, with a critical edge. While holding on to the key issues of childhood studies, Kraftl suggests, paradoxically it seems, that it is (sometimes) necessary to start with something else than children—their voice, agency and mobilities—when studying childhoods. This does not necessarily mean starting with institutional practices or discourses either. Drawing on the recent materiality-thinking, particularly speculative realism/object-oriented ontology but also from queer and critical race studies on materiality, children are re-cognized as always entangled with assemblages containing a vast array of stuff. While Kraftl shows how studying children's water-food-energy nexuses can be a fruitful venue to locate operations of resource-power and the related productions of inequalities and vulnerabilities, he seeks to think materiality beyond anthropocentric definitions. Asking the reader to ignore children for a while and let them move out of focus makes space for the key sensitizing concepts—“pull focus” (following Timothy Morton), “arts of (not) noticing” (following Anna Tsing) and holding “multiple foci”—as well as for the key question: “where are children, precisely?” As we get further in the book, the complexity of this question begins to unravel, extending from issues of spatiality (scales) to those of temporality (speeds). The explorations that follow ground on years of work done in various research projects and comprise phenomena such as datafication, massification, (en)plasticisation, circulation of metals and energy. Traces and circuits of childhoods are found in diverse places, such as landfills, online selling sites, social media platforms, archaeological diggings and abandoned buildings allowing Kraftl to develop speculative accounts and approaches (inspired of Donna Haraway) and draw in an extensive package of concepts such as circulation, phasing, interface, hyperobject, friction and stickiness. Sometimes visual mappings, energy walks, biosampling and art workshops are utilized to draw children—some children, somewhere, as we are reminded—back into the scene. Thus, when I open the book to read another chapter, I feel like opening one of those lift lid school desks populated by stuff most fascinating. For example, in one of the innovative sections of the book students collected environmental samples from tap water, soil, their own breath and urine that were then analysed by nanoscientists to detect the presence of certain metals and plastics. These findings were enriched with students' accounts of their everyday life and considerations on the intractability of urban metabolism. Such experiments not only allow considerations on the ways in which (anthropogenic) substances flow and circulate through bodies depending on how they are located geographically (and temporally), but also demand for complex analyses to speculate on the entanglements of the bio and the social. Insightfully, when the participating children were quoted, the concentration levels were marked next to the commonplace nominators of name, sex and age, allowing questions of representation to arise. In the book “starting-with” matter, such as bricks, toys, data, (digital/social) media, plastics, metals and energy, works for developing the key original concept “infra-generations.” This concept seeks to draw attention to the ways in which (often anthropogenic) stuff weaves together human and more-than-human generations also exceeding human finitude. Playing with an idea that generations emerge from, with and through the stuff we live our lives by offers, I think, a valuable critique—stuff, such as plastics, are both generations (of queer more-than-human kinships) and generative (of human and more-than-human worlds). In addition, the term “infra-generations” seeks to account for the residues, effects, cuts, doings that produce (or generate) multiple spatiotemporalities that are largely “out of control” (as in the case of nuclear waste, data, plastics, metals, chemicals, and so on). In all, After Childhood provides several important and critical insights for research on childhood, but next to this, I feel it among the fine efforts towards interdisciplinary studies of entanglements, assemblages and interfaces, with this time also childhoods included.