The ornamental design for a meditationbenchseat, as shown and described.
FIG. 1 is a top and front perspective view of a meditation bench seat;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The evenly spaced broken lines shown in the drawings illustrate portions of the meditation bench seat that form no part of the claimed design, while the remaining dash-dot-dash broken lines represent the bounds of the claimed design.