Toilet rim block

FIG. 1 is a top, front, right perspective view of a toilet rim block showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing the remainder of the holder are for environmental purposes only and form no part of the claimed design.