Since he's only 3, he can build the two aircraft and the hovercraft is not alone, but with a little guidance and a helping hand now and then he comes along very well. The best he likes the jet. Personally, I find the propeller aircraft better since it still has beautiful details. We are jointly working for a while, if we take the current model only carefully apart and then zusamenbauen to another model.
All in all, a toy prepares the result of Felxibilität last a lifetime.