Cup Holder Adapter

FIG. 1 is a top perspective view of a cup holder adapter, showing my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view thereof.

The broken lines in FIG. 1 depict enviornmental matter that forms no part of the claimed design.