The ornamental design for a portablemulti-ball storage container, as shown and described.
FIG. 1 is a perspective view of a portable multi-ball storage container
showing my new design therefor. The broken-line printed matter is shown
for purposes of illustration only and forms no part of my design.
FIG. 2 is a front elevational view, the rear elevational view being a
mirror-image thereof;
FIG. 3 is a top plan view;
FIG. 4 is a right side elevational view, the left side elevational view
being a mirror-image thereof. The broken-line printed matter is shown for
purposes of illustration only and forms no part of my design; and,