Tropes common to fairy tales. See also mythical motifs.Surprisingly, fairies in the winged, fluttery sense are absent, as are modern, pointy-eared versions of the fair folk. Also, a fair number of tropes that are thought of as "fairy tale" do not actually appear in fairy tales.
Child Marriage Veto: Almost never portrayed in a good light. A girl who refuses the husband her father chooses for her either faces trials until her pride is broken or misses out on an incredibly good catch. The exception is when the father chooses himself as his daughter's husband.
Green-Eyed Monster: The stepmother can hate the stepdaughter's beauty on behalf of herself or her less-attractive daughters; older sisters (and brothers) frequently envy the success of younger sisters (and brothers)
Honorary Uncle In The Three Spinners and its variants, the heroine's helpers want to be her Honorary Aunts.
If I Can't Have You: The prince may be shapeshifted because of his refusal to marry a terrible bride. Conversely, the ogre/witch/what have you that was raising the heroine may curse the prince to forget her after they run away.
Laser-Guided Karma: Show compassion to the helpless old woman? She's a good fairy who will give you valuable assistance. Kick the Dog? He was a sorcerer disguised as a wolf, and now you're a wolf too.
Last Request: A frequent cause of the parent form of the Girl Who Fits this slipper.
Law of Inverse Fertility: Mostly of the "want but can't get" variant, though there are a few fairy tales in which virgins can get pregnant involuntarily by magical means, such a drinking from a certain spring