We explored a range of familial supports in the development of “strong” young children. We videotaped one full day in the life of each of five 30-month-old girls in Thailand, Canada, Peru, Italy, and the United Kingdom. A social-interactional conceptual framework guided our interpretive methodology. The diverse cultural tools brought to bear by both the child and her caregivers that appeared to enhance robust responses to the vicissitudes of everyday life are illustrated and analyzed as developing foundations of thriving. Toddlers and their caregivers enlisted soothing resources that exemplify microsystemic support that promoted the autonomy and social maturity valued by the families. Such factors appear to be associated with developing psychosocial well-being and resilience.