The ornamental design for a paperdollblanket, as shown and described.
FIG. 1 is a front view of a first embodiment of a paper doll blanket;
FIG. 2 is a front view of a second embodiment of a paper doll blanket;
FIG. 3 is a front view of a third embodiment of a paper doll blanket;
FIG. 4 is a front view of a fourth embodiment of a paper doll blanket; and,
FIG. 5 is a front view of a fifth embodiment of a paper doll blanket.
The broken lines surrounding the paper doll blanket depict the boundaries of the claim and form no part thereof. The broken lines illustrating paper doll hair styles and the spaces contained within these broken lines depict portions of the paper doll blanket that form no part of the claimed design.