Elsewhere on MAC you'll find reference to plastic toys that were given away as an extra USP in soap boxes.
Above is rare Bonux version (13 cm) of the SNCASE SE 3200 Frelon, a French beauty from the fifties, Bonux being a vintage detergent brand from France.
In the Netherlands we, as young boys in the late 50's, were glad to get these helicopters from Lodaline: