Suppose there was a little ant that thought it could do everything on its own (the 'little twat' ant). It didn't cooperate with the other ants in the colony. But when it came time to gather food for the winter, it realized it couldn't manage alone. So, it learned the importance of teamwork. This shows that even the smallest of us need to work together sometimes.
One 'little twat story' could be about a little bird that was always too proud of its small but beautiful feathers (the 'little twat' being the bird in a sense). It didn't listen to the older birds about the approaching storm. When the storm came, it got into trouble but was finally saved by the other birds. The lesson is to listen to the advice of those more experienced.
There could be a story of a little flower in a garden. This flower was a bit of a 'little twat' as it thought it was the most beautiful and didn't need the help of the gardener. But then, a drought came, and all the other flowers that were taken care of by the gardener survived, while this little flower started to wither. It learned that we all need some care and support from others.