4 ideas
Raquel is the unplanned youngest child in a Brazilian family whose siblings are much older. Adults mock the letters she writes to invented friends, so she hides her three wishes (to grow up, to be a boy, to be a writer) in a hand-me-down yellow bag from a rich aunt. The bag grows heavier as the wishes swell. Through encounters with talking objects and roosters, the first two wishes shrink away and float off like kites, and only the wish to write remains.
A wish that cannot be spoken because others would ridicule it does not fade. It swells and becomes a burden the person must carry and conceal. Once the wish is looked at directly and traced to what it compensates for, it either lightens and can be let go or reveals itself as a real vocation worth keeping.
Raquel wants to be a boy because boys are allowed to play, decide and act more freely, not because of who she is. Read this way, a wish to change category is really a protest against the privileges attached to that category. The wish dissolves when she sees that the constraint, not her identity, is the problem.
Terrível is a fighting cock whose owner has sewn his thoughts together with thread so that he can think only about winning fights. This shows conditioning working by narrowing thought itself rather than by forcing behavior. A creature trained that way pursues its handler's goal as if it were its own, even into self-destruction.