We claim the ornamental design for a spoon, as shown and described.
FIG. 1 is a perspective view of a spoon as viewed from the bottom and the right side thereof, according to one embodiment.
FIG. 2 is a front elevation view of the spoon of FIG. 1.
FIG. 3 is a rear elevation view of the spoon of FIG. 1.
FIG. 4 is a left side elevation view of the spoon of FIG. 1.
FIG. 5 is a right side elevation view of the spoon of FIG. 1.
FIG. 6 is a perspective view of the spoon of FIG. 1 as viewed from the top and the right side thereof.
FIG. 7 is a top plan view of the spoon of FIG. 1; and,
FIG. 8 is a bottom plan view of the spoon of FIG. 1.
Certain features are shown in dashed lines. The features shown in dashed lines are for illustrative purposes only, and form no part of the claimed design.