FIG. 1 is a top elevational view of a handle for container embodying my new design; FIG. 2 is a front side view of a handle for container; FIG. 3 is a rear side view of a handle for container; FIG. 4 is a left side view of a handle for container; FIG. 5 is a right side view of a handle for container; FIG. 6 is a bottom elevational view of a handle for container; and, FIG. 7 is a perspective view of a handle for container.