Bottle Insert for a Handheld Carbonation Device

FIG. 1 is a rear perspective view of a bottle insert for a handheld carbonation device in our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The parts shown as broken lines in FIGS. 6 and 7 form no part of the claimed design.