68 million people were forcibly displaced at the end of 2017, double those displaced in 2005. More than half are children, many of whom are likely to be amongst the poorest and most vulnerable children on the planet. As trends of displacement move ever upwards, it is increasingly essential that we identify solutions that ensure the wellbeing and futures of displaced children. A Durable Solution is found when a child’s rights are fully reinstated during and/or after migration or displacement. The Toolkit allows practitioners to build evidence-based and child-focused, long-term solutions and advocacy interventions. It provides substantial direction on issues of return and re-integration and outlines options, actions and legal guidance related to local integration and resettlement. It can help measure child specific gaps in displacement and irregular migration settings, shape policy and decision-making, monitor improvements and increase the accountability of service providers. The toolkit is intended as an internal, working document that will develop over time to support SC staff in designing and delivering strong, scalable solutions for the most vulnerable children.