The ornamental design for a powdercontainer, as shown and described.
FIG. 1 is a front elevation view of a powder container showing our new design;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a front, bottom, and right side perspective view thereof;
FIG. 8 is an enlarged front elevation view of callout 8 in FIG. 1 thereof; and,
FIG. 9 is an enlarged bottom plan view of callout 9 in FIG. 6 thereof.
The evenly segmented broken lines indicate portions of the article that form no part of the claimed design. The dot dash broken lines indicate cutoff boundaries for enlarged detailed portion views.