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 front view of the toy building element shown in FIG. 1, the rear and side views being identical.
FIG. 4 is a top view of the toy building element shown in FIG. 1; and,
FIG. 5 is an enlarged 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.