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 top perspective view of the toy building element.
FIG. 2 is a bottom perspective view of the toy building element shown in FIG. 1.
FIG. 3 is a rear view of the toy building element shown in FIG. 1.
FIG. 4 is a left side view of the toy building element shown in FIG. 1; and,
FIG. 5 is a bottom view of the toy building element shown in FIG. 1.
The interior of the toy building element, which is shown in broken lines for illustrative purposes only, does not form part of the claimed design.