The ornamental design for a handle for a cleaning implement, as shown and described.
FIG. 1 is a rear left perspective view of a handle for a cleaning implement, wherein the remainder of the handle for a cleaning implement is unclaimed and omitted for clarity;
FIG. 2 is a front view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a right view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a left view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a bottom left perspective view thereof.
The dot-dash-dot broken line showing represents unclaimed boundaries of the claimed design. The dot-dot broken line showing represents environmental structure and forms no part of the claimed design.