you need a stick and a blindfold
Have your child face up or face down on the carpet wearing a blindfold. Tap a limb get him to lift up that limb, then tap two in a row etc. It might be best to let him see the stick and tap lightly before blindfolding him so he knows not to fear being hurt from an unknown source in a game. Or blindfold your child and move an arm or leg or shoulder. While still blind he has to copy the movement you made but on the other side of his body.