The ornamental design for a toy hot airballoon, as shown and described.
FIG. 1 is a front perspective view of a toy hot air balloon showing a first embodiment of our new design;
FIG. 2 is a front elevational view of FIG. 1;
FIG. 3 is a side elevational view of FIG. 1;
FIG. 4 is a top plan view of FIG. 1;
FIG. 5 is a bottom plan view of FIG. 1;
FIG. 6 is a front perspective view of the toy hot air balloon showing a second embodiment of our new design;
FIG. 7 is a front elevational view of FIG. 6;
FIG. 8 is a rear elevational view of FIG. 6;
FIG. 9 is a right side elevational view of FIG. 6;
FIG. 10 is a left side elevational view of FIG. 6;
FIG. 11 is a top plan view of FIG. 6; and,
FIG. 12 is a bottom plan view of FIG. 6.
The structural elements depicted by broken lines in the drawings have been shown for the purpose of illustrating portions of the toy hot air balloon that form no part of the claimed design.