Nonfiction has long been left out of the discourse on literacy and little is known about the affective experiences that children seek when they choose to engage with facts via reading and otherwise. We have conducted an interview study in which children of diverse socioeconomic backgrounds in Czechia (N = 20, age 9-11) reflected on the world of facts as a springboard for affective engagement. Bespoke creative props were developed for the study. First, children made collages of their real-world interests and then reflected on the different activities (e.g. reading, viewing, talking, playing) through which they nurture these interests. Second, children engaged in the design of an imaginary nonfiction book on a topic of their choosing, a process that involved laying out a double page, leafing through sample books, and sorting picture cards representing different book design features. We present the interview toolkit and its holistic rationale and offer two contrasting case studies of children whose engagement was characterised respectively by a 'learning' and 'wonder' focus. Their differences showcase the interview toolkit's flexibility for further research and practice and expose the underexplored complexity and diversity of children's nonfiction experience.