I claim the ornamental design of a strainer sink accessory, as shown and described.
FIG. 1 illustrates a perspective view of strainer sink accessory disposed in a sink.
FIG. 2 illustrates a perspective view of the strainer sink accessory of FIG. 1.
FIG. 3 illustrates a face of the strainer sink accessory of FIG. 1.
FIG. 4 illustrates a face of the strainer sink accessory of FIG. 1 that is opposite the face of FIG. 3.
FIG. 5 illustrates a side view the strainer sink accessory of FIG. 1 that corresponds to a top side of FIG. 3.
FIG. 6 illustrates a side view of the strainer sink accessory of FIG. 1 that is opposite the side view of FIG. 5, and corresponds to a bottom side of FIG. 3.
FIG. 7 illustrates a side view of the strainer sink accessory of FIG. 1 that corresponds to a left side of FIG. 3; and,
FIG. 8 illustrates a side view of the strainer sink accessory of FIG. 1 that is opposite the side view of FIG. 7, and corresponds to a right side of FIG. 3.
The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design. The shade lines in the Figures show contour or the flatness of a surface, and not surface ornamentation.