The ornamental design for a bucketswingseatcover, as shown and described.
FIG. 1 is a front view of a bucket swing seat cover, showing the swing cover proximate to a bucket swing to which the seat cover attaches.
FIG. 2 is a front view of a bucket swing seat cover positioned for insertion in a bucket swing.
FIG. 3 is a side view of a bucket swing seat cover positioned inside a bucket swing, where chain pads of the bucket swing seat cover are being affixed.
FIG. 4 is a side view of a bucket swing seat cover after the chain pads have been affixed.
FIG. 5 is a side view of a bucket swing seat cover showing a top padding portion being affixed to a top portion of the bucket swing.
FIG. 6 is a front view of a bucket swing seat cover attached to a bucket swing, with chain pads attached and with the top padding affixed; and,
FIG. 7 is a front view of a bucket swing seat cover attached to a bucket swing showing a child toy attached to a front attachment bar.
In the drawings, the broken lines in the figures depict a child's swing and a toy, and form no part of the claimed design.