The ornamental design for an attachablecontainerholder, as shown and described.
FIG. 1 is a front perspective view of an attachable container holder, according to an embodiment;
FIG. 2 is a front view of the attachable container holder illustrated in FIG. 1;
FIG. 3 is a rear view of the attachable container holder illustrated in FIG. 1;
FIG. 4 is a right side view of the attachable container holder illustrated in FIG. 1;
FIG. 5 is a left side view of the attachable container holder illustrated in FIG. 1;
FIG. 6 is a top view of the attachable container holder illustrated in FIG. 1;
FIG. 7 is a bottom view of the attachable container holder illustrated in FIG. 1;
FIG. 8 is a rear perspective view of the attachable container holder of FIG. 1; and,
FIG. 9 is an alternative front perspective view of the attachable container holder illustrated in FIG. 1, with the band in a second position in which the band is curved and fastened about a buckle housing, and also with a hanging cord attached to the buckle housing and a clip attached to the hanging cord.
The broken lines are directed to environment and are for illustrative purposes only and form no part of the claimed design. The thin solid lines and surface shading illustrate surface contour and form no part of the claimed design. The drawings contain a symbolic break. The portions between the break lines form no part of the claimed design.