In the Early Childhood years, children help a partner build something (pattern or animal) out of duplo using verbal instructions. Both children have the same pieces, one child’s animal is already built. They have to describe to their partner how to build it. Start with Tch giving instructions to build, and work towards children giving each other instructions. Use a barrier screen to make it more difficult.
Ideas for animals: https://frugalfun4boys.com/lego-duplo-animals-to-build/