The ornamental design for a bagpiperthumbdrive, as shown and described.
FIG. 1 is a front, right, isometric view of the bagpiper thumb drive showing our new design;
FIG. 2 is a front, left, isometric view thereof;
FIG. 3 is a front view thereof, showing the bagpiper thumb drive having a lower section disconnected to reveal a Universal Serial Bus (“USB”) connector protruding from beneath a kilt and housable interior to a pair of legs; and,