Many styles of poetry require students to apply their knowledge of the language. They may depend upon counting syllables, phonemic awareness, rhyming, or parts of speech. These are great opportunities for students to reinforce these concepts by using them first hand.
Here is a great site where you can learn about all the different types, kinds, and styles of poetry as well as see examples:
55 Types of Poetry Forms
For Novice learners, I would recommend starting with Acrostic, Cinquain, Couplet, or Haiku style poetry.
Here are some great tools, supports, and resources for students to use as they begin to write their Spanish poetry:
Spanish Parts of Speech
Spanish Rhyming Dictionary
If you try this in your classroom, let me know how it goes! In closing, a couple of poems written by my students.
El Chico Café (A Limerick) Mi Profesora (A Quatrain)
Había un chico muy raro Mi profesora
Que conducía un carro caro. Siempre está hablando
Un dia, chocó con una vaca La boca grande
Y cayó en una pila de caca Siempre está charlando
Al lado de su faro
I'm sure they couldn't have been talking about me in that last one...nah...