Separator for Container or Cup

FIG. 1 is a left-side perspective view of a separator for container or cup, showing the new design. FIG. 2 is a front view thereof. FIG. 3 is a rear view thereof. FIG. 4 is a right side view thereof. FIG. 5 is a left side view thereof. FIG. 6 is a top view thereof. FIG. 7 is a bottom view thereof; and, FIG. 8 is a left side view of the separator for container or cup, shown in use with environmental subject matter of exemplary containers and/or cups. The broken lines are shown for the purpose of illustrating environmental subject matter of exemplary containers and/or cups and form no part of the claimed design.