The ornamental design for a joined plugholder, as shown and described.
FIG. 1 is a front elevational view of a joined plug holder showing my new
design;
FIG. 2 is a rear elevational view thereof; and,
FIG. 3 is a right side elevational view thereof, the left side being a
mirror image of that shown.
The patterned areas within the rectangular boundaries are intended to
represent conventional hook and loop type fastening means, and the
broken-line elements are intended to represent conventional stitching.