A little brother might have a story of his own little adventure in the backyard. He could be exploring and find a little nest with baby birds. Instead of disturbing them, he carefully watched over them and made sure no other animals bothered them. His simple act of kindness towards the baby birds is a heart - warming little brother story.
One little brother story could be about a little brother who always tries to imitate his older sibling. For example, he would copy the way his older brother dresses, from wearing the same style of hat to the same type of shoes. It's really cute to see him trying so hard to be like his big brother.