For example:
A name associated with a famous celebrity
Something gorgeous but very obviously from a movie/book franchise
Something that sounds way too posh (or not!)
Etc.
I loved the name Merida (from the movie Brave) and was very disappointed to learn that it's not actually a real Scottish name at all! Naming your daughter after a Disney princess seems like something you may regret.
I also saw a TV show once with a character called Persephone, Percy for short. I love it but we are in no way posh enough to pull it off. Sigh.
What are yours?