The ornamental design for a multi-purpose positional support for accessories such as portable digital devices, as shown and described.
FIG. 1 is a perspective view of a multi-purpose positional support for accessories such as portable digital devices according to the present invention;
FIG. 2 is a front elevational view of the support device of FIG. 1, the back view being a mirror image thereof;
FIG. 3 is a side elevational view of the support device of FIG. 1 and 2, the opposite side being a mirror image thereof;
FIG. 4 is a top view of the support device of FIGS. 1-3; and,
FIG. 5 is a bottom view of the support device of FIGS. 1-4 .
The broken lines shown in the Figures are for environmental purposes only and form no part of the claimed design.