The ornamental design for a reusablegiftbag, as shown and described.
FIG. 1 a front view of a reusable gift bag accordance with the new design, depicting the bag empty and laid flat, the bag includes a drawstring and four triangular portions disposed about a bag opening.
FIG. 2 is a back view thereof;
FIG. 3 is a front perspective view of the reusable gift bag of FIG. 1, depicting the bag having a gift therein and with the drawstring tied.
FIG. 4 is a back perspective thereof;
FIG. 5 is a first side perspective thereof;
FIG. 6 is a second side perspective view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The dashed lines depict environmental aspects and the shape of the gift within the gift bag form no part of the claimed design.