The ornamental design for a magnetic toothbrush holder with removable rinsing cup, as shown and described.
FIG. 1: is a front view of the magnetic toothbrush holder with removable rinsing cup.
FIG. 2: is a side view of the magnetic toothbrush holder with removable rinsing cup depicting several toothbrushes hanging magnetically from the magnetic strip and positioned over the removable rinsing cup.
FIG. 3: is a top view of the magnetic toothbrush holder with removable rinsing cup; and,
FIG. 4: is a bottom view of the magnetic toothbrush holder with removable rising cup.