The ornamental design for an accessoryholder, as shown and described.
FIG. 1 is a top perspective view of an accessory holder showing our new design;
FIG. 2 is a bottom perspective view of the accessory holder;
FIG. 3 is a left side view of the design corresponding to FIG. 1;
FIG. 4 is a front view of the design corresponding to FIG. 1;
FIG. 5 is a right side view of the design corresponding to FIG. 1;
FIG. 6 is a back view of the design corresponding to FIG. 1;
FIG. 7 is a bottom view of the design corresponding to FIG. 1;
FIG. 8 is a top view of the design corresponding to FIG. 1; and,
FIG. 9 is a perspective view of the accessory holder as it may be used to connect a golf club head cover to a golf bag, wherein the golf bag and golf club head cover are shown in dashed lines and do not form a part of the design.