The ornamental design for an over-the-door hanging shelf, as shown and described.
FIG. 1 is a perspective view of the design of an over-the-door hanging shelf showing the new design and illustrating it being placed on a door;
FIG. 2 is a perspective view of the design of an over-the-door hanging shelf of the present invention;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevation view thereof, the left side being a mirror image;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevation view thereof; and,
FIG. 7 is a rear elevation view thereof.
The broken lines shown in the drawing views are included for the purpose of showing environmental subject matter that forms no part of the claimed design.