The Lower Saxony Institute for Early Childhood Education and Development (Niedersächsische Institut für frühkindliche Bildung und Entwicklung e.V., nifbe) is investigating what contributes to children's well-being in childcare centers – specifically from the children's own perspective. This approach places children's agency at the center and views them as independent and competent actors in their own lived environment. Until now, children's well-being has often been described and assessed by adults. This is where the research project comes in, asking: In which situations, at which locations, and under what conditions do children experience well-being in daycare? And what is particularly important to them in this regard? Using a multi-method approach inspired by the Mosaic Approach, children are actively involved in the research process – they photograph, narrate, create, and reflect together with the researchers. This creates a multi-layered picture of their experiences and perspectives. The goal is to identify key situations for children's well-being and derive concrete insights for educational practice. In a subsequent transfer phase, materials and training concepts will be developed to support educational professionals in specifically promoting children's well-being in everyday daycare life. The project is funded by the Robert Bosch Stiftung.