The ornamental design for a stand for an electricalappliance, as shown and described.
FIG. 1 is a perspective view showing the front side and upper portion of a stand for an electrical applicance according to the present invention; and,
FIG. 2 is a perspective view showing a rear surface, opposite side and bottom of a stand for an electrical appliance in accordance with the present invention.
The broken lines are shown for illustrative purposes only and form no part of the claimed design.