My kids love Tinga-Tinga tales on CBeebies and I am very fond of Kiplings Just-So-Stories both of which are fables explaining the origins of an animal’s traits often via an element of their personalities.
It struck me that this would make an interesting frame for a campaign. Each session would start with a Tinga or Just-so story which would tease an element of the plot. So for instance if the intro story was how the stubborn elephant got stuck and stretched his trunk then the scenario would be driven by the stubbornness of an NPC.
I think it would be a fun way of framing a few scenarios in a mini F20 campaign.