This chapter examines how 19 emergent bilingual, 4-year-old students used digital composing skills to create dual language eBooks using touchscreen computer tablets (iPads) and digital photography, drawing, and eBook composing apps. The analyses focus on children's composing processes and products, adult supports, and participants' embodied interactions with the digital tools. Children approached eBook composing through naming, narrating, dramatic play and exploratory play. eBook texts were multimodal and included images, print, and oral recordings. Adult verbal scaffolding and gesture supported children's skills as digital composers. Children became active designers of digital content, independently navigating and experimenting with the multimodal functions of the iPad. Analyses showed how children used their heritage languages and English to compose dual language eBooks and support their emergent writing. The authors argue that children benefit from early opportunities to explore ways of combining print, images, sound, and multiple languages to create digital texts that effectively communicate across modalities and contexts.