The ornamental design for a magnetic quilthanger, as shown and described.
FIG. 1 is a front perspective view for a magnetic quilt hanger showing my new design;
FIG. 2 is a top side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a upper view thereof;
FIG. 7 is a lower view thereof;
FIG. 8 is a left sectional view taken along lines 8-8 from FIG. 4 thereof; and,
FIG. 9 is a front perspective view thereof shown in an environment of use.
The broken lines in FIG. 9 depict environmental subject matter of additional magnetic quilt hangers, a rod and a quilt used with the invention and form no part of the claimed design.