The ornamental design for a set of airvents for a vehicle or toyvehicle, as shown and described.
FIG. 1 is a front left perspective view of the set of air vents for a vehicle or toy vehicle showing my design;
FIG. 2 is a rear right perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof, with the left and right side views being mirror images of one another;
FIG. 6 is a top view thereof; and,
FIG. 7 is an enlarged front right perspective view thereof.
The dash-dash broken lines illustrate environmental structure that form no part of the claimed design. The dot-dash broken lines represent the bounds of the claimed design and form no part of the claimed design.