here's an example of the kind of fun thing i would do as a parent:
kid is 16 years old, it's christmas, there's no present under the tree. kid goes, "where's my present?" i go, "your present is too big to fit under the tree! why don't you go out to the garage and take it for a spin?" [knowing smile]
kid runs to the garage, opens the door, and this is what's in there...
and we laugh and laugh.