The ornamental design for a toolbox, as shown and described.
FIG. 1 is a front elevation view depicting the front portion of an embodiment of a toolbox.
FIG. 2 is a right side elevation view of the toolbox of FIG. 1.
FIG. 3 is a perspective view of the toolbox of FIGS. 1 and 2 depicting a top portion of the toolbox.
FIG. 4 is a left side elevation view of the toolbox of FIGS. 1-3; and,
FIG. 5 is a perspective view of the toolbox of FIGS. 1-4 depicting a bottom portion of the toolbox.
The portions of the drawings shown in broken lines are for illustrative purposes only and form no part of the claimed design. However, all solid lines and shaded surface structure form part of the claimed design.