inside the water container locking the lid thereon and carrying the package by the handle various accessories can be used with the toy set such as a water sprinkler or water spout also some sets may include a turbine or water wheel that rotates a drive shaft the drive shaft can animate a figure or can drive a gear train that the child can assemble onto a peg board structure still another possible accessory is a sand settling tank the water mixed with sand in the storage tank can form a slurry with the sand and pass through a cylindrical settling chamber the chamber can have a series of horizontal screens for grading by size sand flowing through the settling chamber thus a unique visual effect is created after the sand has filled the settling tank it can be inverted to allow the sand to shift to another position the visual impact of the set can be enhanced by making the pipes and other components transparent so that the sand slurry or foam caused by the slurry is visible additionally the toy set can be used with just the pipes and fittings alone in this case the child can dig holes in the sand and fill them with water to act as reservoirs these reservoirs can be drained or connected to other reservoirs by means of the pipes and fittings also the water flowing from a reservoir can supply one of the aforementioned accessories referring to fig1 4 a toy set is illustrated with a water container 10 having a generally cylindrical shape and on its floor a concentric water outlet 12 the lower end of outlet 12 is formed into a collar in some embodiments a stopper or flap can be employed on outlet 12.