Earbud Charging Case

FIG. 1 is a perspective view of an ornamental design for an earbud charging case, shown in a closed configuration, as seen from the top, left side, and front; FIG. 2 is a perspective view of a bottom, right side, and rear thereof; FIG. 3 is a front view thereof FIG. 4 is a rear view thereof; FIG. 5 is a first side view thereof; FIG. 6 is a second side view thereof; FIG. 7 is a top plan view thereof; and FIG. 8 is a bottom view thereof; FIG. 9 is a perspective view of an ornamental design for the earbud charging case, shown in an open configuration, as seen from the top, left side, and front; FIG. 10 is a perspective view of the bottom, right side, and rear thereof; FIG. 11 is a front view thereof; FIG. 12 is a rear view thereof; FIG. 13 is a first side view thereof; FIG. 14 is a second side view thereof; FIG. 15 is a top plan view thereof; and, FIG. 16 is a bottom view thereof. The broken line portions of the drawings represent environmental structure only, for illustrative purposes only, and do not form part of the claimed design.