The ornamental design for a toiletbowlplungerholder and cover, as shown and described.
FIG. 1 is a top and front perspective view of a toilet bowl plunger holder
and cover showing my new design;
FIG. 2 is a top, front, and left side perspective view thereof;
FIG. 3 is a top, rear, and right side perspective view thereof; and,
FIG. 4 is an enlarged top and rear perspective view thereof, the
broken-line disclosure of the plunger being for illustrative purposes only
and forming no part of the claimed design.