The ornamental design for a shakerbottle, as shown and described.
FIG. 1 is a perspective view of my shaker bottle;
FIG. 2 is a partial perspective view of my shaker bottle with the spout cover hinged to the open position;
FIG. 3 is a front side elevational view of my shaker bottle;
FIG. 4 is a left side elevational view of my shaker bottle, the right side view being a mirror image thereof;
FIG. 5 is a cut-a-way cross-sectional view taken along line 5-5 of FIG. 2 of my shaker bottle; no claim is made to the bottle internal structure or to the wall thickens;
FIG. 6 is a top plan view of my shaker bottle; and,
FIG. 7 is a bottom plan view of my shaker bottle.
The broken lines in the drawing views represent unclaimed portions of a shaker bottle, which are included for the purpose of illustrating unclaimed environment only, and forms no part of the claimed design.