funny faces, singing, appropriate toys, walks or just hanging out in a backyard or grassy area with blanket and snakes....jk I mean snacks lol
I believe if you get down to the child's level "height" and make eye contact while speaking in a calm direct manner will work... most of the time.
Yet to come across anyone this might pertain to in my applications or interviews but in my opinion this might vary from child to child. Every child is different and when working with special needs there is a wide spectrum.
Thats too much. You need time to yourself or else you'll run the chance of being burnt out.