The ornamental design for a two-piece improved bait bucket, as shown.
FIG. 1 is a perspective view of a bait bucket of the present invention;
FIG. 2 is similar to that of FIG. 1 but with a top portion of the invention
separated from and positioned above a lower portion of the invention that
includes a drawer that is partially pulled out for purposes of
illustration;
FIG. 3 is a side view in elevation of the invention of FIG. 1;
FIG. 4 is a plan view of the invention of FIG. 1; and
FIG. 5 is a bottom view of the invention of FIG. 1.