FIG. 1 is a front right perspective view of a lap desk;
FIG. 2 is a rear left perspective view thereof;
FIG. 3 is a front plan view thereof;
FIG. 4 is a rear plan view thereof;
FIG. 5 is a left elevation view thereof;
FIG. 6 is a right elevation view thereof;
FIG. 7 is a top plan view of a lap desk in an unfolded position;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a perspective view of a lap desk in a partially folded position; and,
FIG. 10 is a top plan view of a lap desk in a fully folded position, the bottom plan view being a mirror image thereof.
All broken line portions of the figure drawings are included to show portions of the article that forms no part of the claimed design.