The ornamental design for a flossbobbinsheet, as shown and described.
FIG. 1 is a top plan view for a floss bobbin sheet showing my new design,
the bottom side of the article being identical in appearance to the top
side illustrated in FIG. 1;
FIG. 2 is a side elevational view thereof, the opposite side being an
identical image thereof;
FIG. 3 is a bottom elevational view thereof, the opposite side being an
identical image thereof; and,
FIG. 4 is a top perspective view of a single floss bobbin thereof.