The ornamental design for a pickholder, as shown and described.
FIG. 1 is a front and right side perspective view of a pick holder according to a preferred embodiment of the present invention;
FIG. 2 is a rear and left side perspective view of the pick holder of FIG. 1;
FIG. 3 is a front side elevational view of the pick holder of FIG. 1;
FIG. 4 is a left side elevational view of the pick holder of FIG. 1;
FIG. 5 is a right side elevational of the pick holder of FIG. 1;
FIG. 6 is a rear elevational view of the pick holder of FIG. 1;
FIG. 7 is a top plan view of the pick holder of FIG. 1;
FIG. 8 is a bottom plan view of the pick holder of FIG. 1;
FIG. 9 is a top perspective view of the pick holder of FIG. 1; and,
FIG. 10 is a front and left side perspective view of a pick holder of FIG. 1.
The broken line showing of FIGS. 2, 6 and 10 is included for the purpose of illustrating unclaimed environment and forms no part of the claimed design.