Lego can make for creative and engaging play, which helps children develop their fine motor skills. The perfect balance of precision and coordination is required to create pieces from Lego. The toy aids in developing fine motor skills as it can be used by children at any age, but complex sets will continue challenging them as they grow! The Duplo line for younger children is perfect as it requires less precision and coordination than more complex sets do- this makes them great starter toys while still being challenging enough!