Given your interests and background, consider a "Prehistoric Survival Skills" project. Start with stone and wood tool-making, showing kids different stone and wood properties. Progress to making bows and arrows, fire-starting, and simple cooking over an open flame. This can segue into early technology, like pottery and copper smelting, introducing basic engineering and scientific principles in a fun, hands-on way. Integrate technology by using Raspberry Pis or webcams to document the projects and create digital logs or short videos of their progress. This offers a blend of history, creativity, and modern tech.