Abstract: A kit of parts is provided for a functional toy, such as a children's walker or push along wagon. The kit includes one or more connector(s) having a first and second end, and a radially extending flange therebetween; and one or more foam element(s) with at least one essentially planar surface having at least one opening extending perpendicular to the surface for receiving at least the first end of the connector. The connector flange is configured as a stopper for the insertion of the first end into the foam element opening. When the first end is inserted into the foam element opening to the stopper position, and a further suitable amount of force is applied, the flange of the connector is countersunk into the surface of the foam element, and remains countersunk after the further force is removed due to the frictional force between the connector and the opening.