FIG. 1 is a front elevational view of a white noise sleep aid showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a perspective view thereof; and,
FIG. 8 is another perspective view thereof.
The broken lines in the figures are for the purpose of illustrating portions of the white noise sleep aid, which form no part of the claimed design.