Thinking outside the box here.
Why not hire a sumo wrestler or morbidly obese person as a hockey goalie? Is it illegal for them to kneel or lay down? (I admit knowing very little about hockey rules.)
How about a 7 footer as a football player for goal-line & 4th and inches situations? Could you prevent them from leaning over the line of scrimmage after a direct snap? Could you stop a 7-footer from catching a high pass for 1 yard?
Trying to come up with a way to use a very small person. Baseball? Imagine the tiny strike zone.