Cup shelf

FIG. 1 is a top view of a cup shelf according to my/our design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a right side view thereof, with the left side view thereof being a mirror image thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom perspective view thereof, from the top, right corner thereof; and,

FIG. 7 is a front perspective view thereof, shown for environmental reference.

The broken lines represent environment or structure of the cup shelf and do not form any part of the claimed design.