Grandpa usually features in a lot of the stories too. Whether it's their courtship or their life together, he's an important part. There could also be stories about her siblings, if she had any. They might have been her partners in crime during childhood escapades or sources of support in tough times.
Grandma herself is often a main character. She tells about her own experiences, so she's right at the center of many of the stories.
Well, usually the grandchild is also a main character. The grandchild is the one who listens to grandma's advice and learns from her. There could also be other family members who are part of the story, but grandma and the grandchild are the central ones.
There's not enough information given to determine exactly who the grandma is. She could be a character specific to the Homestarrunner universe, perhaps related to one of the main characters.
The main characters are, as the title suggests, grandma and the girls. Grandma could be a central figure, a matriarch of sorts. The girls could be of different ages, and each might have their own personalities. They could be related to grandma, or she could be like a surrogate grandmother to them. Their individual traits and how they interact with each other would be important aspects of the story.
In 'The Raven', the main character is the unnamed narrator who is mourning the loss of his love, Lenore. He is a tormented soul who has a strange encounter with the raven. In 'The Cask of Amontillado', Montresor is the main character. He is a vengeful man who lures Fortunato into the catacombs to enact his revenge.
Many of the main characters are scholars or investigators. They are driven by curiosity to explore things that are better left alone. For instance, in some stories, they might be looking into ancient cults or strange artifacts. These characters are often unprepared for the horrors they uncover, which makes for a great source of tension in the stories.
In 'The Old Man and the Sea', the main character is Santiago, an old fisherman. He is a symbol of perseverance. In 'A Farewell to Arms', Frederic Henry, a young American ambulance driver in the Italian army during World War I. He is a complex character dealing with love and war.
Obviously, the grandma is one of the main characters. Since she's the one who turns into a younger version. There might also be characters related to her family, like her grandchildren or children who would be affected by her transformation.
I think a smartphone with a good audio recording app is a convenient option. It's something you always have on hand and can easily transfer the recordings to other devices for storage and editing.
Another great type of story could be the ones where she overcame difficulties during hard times. Maybe there were stories of how she managed to get enough food for the family during a shortage, which would show her resourcefulness and strength.
The main characters are typically military personnel. They range from infantrymen to officers. Each character brings their own perspective to the story. Some might be more idealistic about the war, while others are more cynical. These different outlooks create tension and depth in the stories.