FIG. 1 is a front side perspective view of the mountable object holder showing the design in an environment of use with other mountable object holders;
FIG. 2 is a rear perspective view of the mountable object holder of FIG. 1 showing the design in an environment of use;
FIG. 3 is a right side front perspective view of the mountable object holder of FIG. 1;
FIG. 4 is a left side front perspective view of the mountable object holder of FIG. 1;
FIG. 5 is a right side rear perspective view of the mountable object holder of FIG. 1;
FIG. 6 is a left side rear perspective view of the mountable object holder of FIG. 1;
FIG. 7 is a front elevation view of the mountable object holder of FIG. 1;
FIG. 8 is a right side elevation view of the mountable object holder of FIG. 1;
FIG. 9 is a left side elevation view of the mountable object holder of FIG. 1;
FIG. 10 is a top plan view of the mountable object holder of FIG. 1;
FIG. 11 is a bottom plan view of the mountable object holder of FIG. 1; and,
FIG. 12 is a rear elevation view of the mountable object holder of FIG. 1.
The broken lines shown in the figures represent portions of the mountable object holder that form no part of the claimed design.