The ornamental design for a finger-ball challenger toy, as shown and described.
FIG. 1 is a top-front-left perspective view of a finger-ball challenger toy showing my new design;
FIG. 2 is a bottom-rear-right perspective view thereof;
FIG. 3 is a front elevated view thereof;
FIG. 4 is a rear elevated view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right elevated view thereof;
FIG. 8 is a left elevated view thereof;
FIG. 9 is a top-front-left perspective view thereof showing the claimed design in condition of use; and,
FIG. 10 is a top-front-left perspective view thereof.
The broken lines showing of the connectors, in FIGS. 1-2 and 7-10, a tethered ball, a finger fastener and a field signage, in FIGS. 9-10, are included for the purpose of showing environmental structure and form no part of the claimed design.