The ornamental design for the combined stuffed plush basketball and attached child sized security blanket, as shown and described.
FIG. 1 is a perspective view of the combined stuffed plush basketball and attached child sized security blanket, the blanket having a satin binding;
FIG. 2 is a front elevational view thereof; and,
FIG. 3 is a top plan view thereof.
The rear elevational view of the combined stuffed plush basketball and attached child sized security blanket is a mirror image of the front elevational view.