The ornamental design for a backpackhangingring and hook, as shown and described.
FIG. 1 is a left side perspective view of a backpack hanging ring and hook, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a top left view thereof, wherein the broken lines showing the backpack are included for illustrative purposes only and form no part of the claimed design.
The broken lines showing the perimeter represents the metes and bounds of the material surrounding the hook and forms no part of the claimed design.