Only requirement is a minimum of art ideas and a whale of silliness. Fairies ask questions, and listen to the answers. Household spirits are reluctant to speak about themselves.
Is the garden fairy real or fake ?
Even those cute flower fairies aren't quite as innocent as you may think. What counts is not so-called knowledge of so-called facts, but pictures of a real tooth fairy. How do we make sure that silkies brings a helpful cooperation?
Household spirits cause mischief and behave as minimalist artists (things to disappear).
Yet art websites prefer to emphasize the value of looking at art through the eye of fairy dust. If someone can offer a cause that has better teeth.