The ornamental design for a small spongeholdercounter, as shown and described.
FIG. 1 is a top elevation view of a small sponge holder counter showing my new design; and,
FIG. 2 is a left side perspective view thereof, the right side perspective view being a mirror image, and the bottom is flat and unornamented.
The circles in the figures represent holes in the top surface of the small sponge holder counter. The broken lines coming away from the circles represent tear lines.