The ornamental design for my toy storage curtain, as shown and described.
FIG. 1 depicts a front elevational view of the toy storage curtain of the present invention shown gathered for hanging in proximity to a window with the broken line showing of toys being for illustrative purposes only and forming no part of the claimed design;
FIG. 2 depicts a front elevational view thereof in an ungathered position with the detachable pouch removed; and,
FIG. 3 is an enlarged, perspective view of the tieback pouch shown separately for clarity of illustration.