The ornamental design for a toybuildingelement, as shown and described.
It is intended that the toy building element of the present invention be used in a set of toy building elements that are capable of being interconnected in a releasable engagement.
FIG. 1 is a front perspective view of the toy building element.
FIG. 2 is a top view of the toy building element shown in FIG. 1.
FIG. 3 is a left side view of the toy building element shown in FIG. 1, the right side view being identical.
FIG. 4 is a front view of the toy building element shown in FIG. 1, the rear view being identical; and,
FIG. 5 is a bottom view of the toy building element shown in FIG. 1.