Trash can lid

1. 1The ornamental design for a trash can lid as shown and described.

FIG. 1 is a top perspective view of a trash can lid;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front elevational view thereof, a rear elevational view is not shown because it is identical to the front elevational view;
FIG. 4 is a right-side elevational view thereof, a left-side elevational view is not shown because it is identical to the right-side elevational view;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines shown illustrate portions of the trash can lid that form no part of the claimed design.