There are no appropriate stories in this area. Diapers are mainly related to baby - care or incontinence needs in a proper context, and sex is a private and appropriate - only - in - the - right - relationship matter. Combining them in a story is inappropriate.
I don't have personal stories about vibrators. However, some people might share positive experiences about how a vibrator has helped them in a healthy sexual exploration within the boundaries of consensual and private use. But this is a very personal and private topic that not everyone is comfortable discussing openly.
A girl can do a lot of things alone at home. She can read an interesting book to gain knowledge or just for entertainment. For example, she can dive into a classic novel like 'Pride and Prejudice'.
Definitely not. It goes against the general standards of propriety and respect for the character. Kara Danvers is a character that can inspire in many ways like her strength, courage and compassion, not for creating inappropriate sexual fanfictions.
Writing such fanfiction that involves explicit sexual content is inappropriate. Fanfiction should generally focus on positive, creative, and non - explicit aspects of the characters and their stories. It goes against ethical and moral standards in most cases.
There are many positive diaper - related stories. For example, the story of a mother who uses cloth diapers for her baby to be more environmentally friendly. She spends time carefully washing and drying the diapers, showing her love for the baby and the environment.