Our boys love to deal with plasticine - therefore this roller is a nice addition and you can also still in a new direction - the "construction site" - act. The black clay can be the road very well imitate but also in other "site situations" the roller is readily usable. The boys are very excited about the construction vehicles and it is no longer kneading action without those fancy, new equipment. The construction vehicles also seem to be robust - so far I have not discovered any vulnerability. Great Thing!