The ornamental design for a handwaver, as shown and described.
FIG. 1 is a front elevational view of a further embodiment of the hand waver.
FIG. 2 is a rear elevational view of the hand waver of FIG. 1.
FIG. 3 is a right side elevational view of the hand waver of FIG. 1.
FIG. 4 is a left side elevational view of the hand waver of FIG. 1.
FIG. 5 is a top plan view of the hand waver of FIG. 1; and,
FIG. 6 is a bottom plan view of the hand waver of FIG. 1.
The evenly spaced broken lines in FIG. 1 illustrate environment and form not part of the claimed design. The slit shown in broken lines in FIG. 6 does not form part of the claimed design.