FIG. 1 is a front, top, left perspective view of a portable foot spa, showing my new design;
FIG. 2 is a rear, top, left perspective view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a front view thereof; and,
FIG. 9 is another front, top, left perspective view, shown in environmental use.
The broken line portions of FIGS. 1-8 are included to show unclaimed subject matter only and form no part of the claimed design.