The Timeline game by Asmodee is a great game to use to review and practice the passive meaning/voice, past participles, saying dates and fun expressions in Spanish. Either buy the games from Spain –Eventos or Inventos(which is not super easy—as it takes some time to receive the game in the mail) or buy the games in English and write the translations on the top of the card--Inventions or Timeline Diversity.
I practiced using the passive voice and meaning in one night, but there is enough material here for at least two lessons: constructing passive meaning with se—for example, as in ¿Cuándo se inventó el ascensor?
Lesson 2: Practice using the other passive construction with ser + past participle, as in Creo que el bronce fue inventado antes del sacacorchos.
What is so great about this game is that your students can play this game in school and then at home too-if they want to buy the Timeline game!