Take a chain (a rope with young kids) which reaches the ground from your hand relaxed standing. Have one or more partners come at you to grab you and you move your body to swing the chain at them so they avoid you. You keep your body relaxed and your arm touching your body so you learn what you can do with just your body.
After everyone has done the drill replace the chain with a dull knife and do this again adding moving the arm from the elbow down and again see what you can do with just this.

To show how important thinking of yourself first and others later in terms of space have your partners try to grab and lift you off the ground (add a trunk to this drill if you and your partners are willing) and see how you manage with large movements with arms fully extended in reaction in contrast to placing yourself where if fits you in space and using the least amount of movement in the limbs and body to control others.