Ingredients you will need:
    medium sized basin
    2 pieces of plastic wrap ( big enough for the basin with extra)
    dirt/sand
    water
 

    Place dirt/sand in bottom of basin. Combine the two pieces of plastic wrap together forming a stronger piece of plastic. Put in water until it's about 2 inches high in the basin. ( You might want to do this outside and be prepared to get wet.) Bunch up the ends of the wrap so it is easier to hold. Then pull the ends and watch the water form into a wave.