The ornamental design for a simple solewashingdevice, as shown and described.
FIG. 1 is a perspective view of a simple sole washing device showing our new design;
FIG. 2 is a perspective view of a second embodiment of a simple sole washing device showing our new design;
FIG. 3 is a top plan view of FIG. 1;
FIG. 4 is a top plan view of FIG. 2;
FIG. 5 is a bottom plan view of the simple sole washing device shown in FIGS. 1 and 2, with the cover being shown open 90 degrees in relation to the washing compartment;
FIG. 6 is a front elevational view of FIGS. 1 and 2 with the cover in an opened position;
FIG. 7 is a side elevational view thereof, the opposite side being the same; and,
FIG. 8 is a perspective view of FIGS. 1 and 2, with the cover shown in a closed position.
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.