Practice not being too literal # 18

Question

As my title says, I am trying to learn to not be literal in translations, so every day I will post a saying in English and ask for suggestions as to how to convey the thought in Spanish. At the end of the day, I will pick the answer that I think most accurately reflects the idea, and I will choose it as best answer for 20 points to the respondent.

Today's phrase is, "flash in the pan".

Good luck!

Answer 1

rápidamente aqui e ido

Answer 2

Algo pasajero / Flor de un día.

Answer 3

"flash in the pan"

Algo que no dura mucho (something that doesn't last long).

Answer 4

éxito inesperado.

Answer 5

Algo efémero... Something ephemeral

Answer 6

Tiene solo una chispa.

Answer 7

Una maravilla de solo un éxito.

My attempt at "One hit wonder".

Answer 8

Tenía esperanzas altas que se terminaron en la desilusión. High hopes that ended in disappointment.