I have lovely memories of this Storystane activity. Taking turns to take to the 'stage', taking turns to be focused on and to really listen to each others stories removed from the confines and distractions of everyday life at home.
Storytelling builds skills; to communicate our thoughts, express ourselves and learn a range of social skills including listening to others and taking turns.
Making up a story can be difficult but the point of ths exercise is to allow your imaginations some freedom without worrying or taking things too seriously. We can get caught up in the pressure of creating a 'good' story but maybe the value is found in giving it a go and having a good time together.