The ornamental design for picnic/party cooler, as shown and described.
Description:
FIG. 1 is a three-quarter front pictorial view of an embodiment of a picnic/party cooler according to my new design;
FIG. 2 is a front elevational view of the embodiment and is also a mirror image of a rear elevational view;
FIG. 3 is a left side elevational view of the embodiment and is also a mirror image of a right side elevational view;
FIG. 4 is a top plan view of the embodiment; and,
FIG. 5 is a bottom plan view of the embodiment.
The broken lines, which represent a stem and some form of handle recess or any other form of carrying handle, are for illustrative purposes only and form no part of the claimed design.
