Container mixer

FIG. 1 is a top perspective view of a container mixer, showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a third side view thereof;

FIG. 6 is a fourth side thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed lines depict portions of the container mixer that form no part of the claimed design.