i have my littles put their hands in their pockets if they are having trouble controlling them
or if there are no pockets- you can fold your arms.
and if you cant quit verbally antagonizing your brother in the car..you put your hand over your mouth. i save that for the car though.
not sure about the hands on the head
its kinda the same- but in the store, its so noticable..it could feel embarrasing. im sure your point is not to embarrass
..but to keep stuff from getting broken, right? try the pockets.