The ornamental design for a garden drum kit, as shown and described.
FIG. 1 is a front elevational view of a garden drum kit 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 a cross sectional view taken along lines 8-8 shown in FIG. 5.
The broken lines disclosed in FIG. 8 depict internal structure that forms no part of the claimed design. All other broken lines shown in the drawings depict stitching that forms part of the claimed design.