The aim of the project Custom Made (Added Value to the Approach for Language Stimulation and Working on Effect during Routines with Parent-Child Programmes) is to explore how programmes that encourage low-educated parents to stimulate the early linguistic and literacy development of children can be better tailored to the needs of participating families. A consortium of researchers and practitioner partners has identified key challenges in the implementation of such programmes and has identified a number of promising opportunities. The aim of the project is to further develop and evaluate these promising opportunities.