The ornamental design for a toyplane, as shown and described.
FIG. 1 is a top plan view of a first component of the toy plane in accordance with my design;
FIG. 2 is a top plan view of a second component of the toy plane in accordance with my design;
FIG. 3 is a top plan view of the toy plane in accordance with my design comprising the first component and the second component assembled together;
FIG. 4 is a front elevation view of the toy plane in accordance with my design comprising the first component and the second component assembled together;
FIG. 5 is a bottom plan view of the toy plane in accordance with my design comprising the first component and the second component assembled together;
FIG. 6 is a back elevation view of the toy plane in accordance with my design comprising the first component and the second component assembled together;
FIG. 7 is a side elevation view of the toy plane in accordance with my design comprising the first component and the second component assembled together, the opposite side being a mirror image of that shown; and,
FIG. 8 is a top perspective view of the toy plane in accordance with my design comprising the first component and the second component assembled together.