The ornamental design for a portable icefishing and camping shelter, as shown and described.
FIG. 1 is a perspective view of the shelter of this invention with the broken lines being stitching;
FIG. 2 is a top view of the shelter of this invention;
FIG. 3 is a bottom view of the shelter of this invention with the broken lines being stitching;
FIG. 4 is a front view of the shelter of this invention with the broken lines being stitching;
FIG. 5 is a rear view of the shelter of this invention with the broken lines being stitching; and,
FIG. 6 is a right side view of the shelter of this invention with the left side of the shelter of this invention being a mirror image of the right side of the shelter.