Great conversation practice is having students ask and answer "Who, What, When, Where, and Why". To do this, list the question words in Spanish on your board. Then choose a verb to use in the questions. Be sure to choose a verb that would work well with each question.
Example: Use the verb comer = to eat
Student 1 asks: ¿Quién come? (Who eats?)
Student 2 answers: María come. (Maria eats.)
Student 2 asks: ¿Qué come? (What does she eat?)
Student 1 answers: Come los tacos. (She eats the tacos.)
Student 1 asks: ¿Cuándo come? (When does she eat?)
Student 2 answers: Come a las tres. (She eats at 3:00.)
Student 2 asks: ¿Dónde come? (Where does she eat?)
Student 1 answers: Come en el restaurante. (She eats in the restaurant.)
Student 1 asks: ¿Por qué come? (Why does she eat?)
Student 2 answers: Come porque tiene hambre. (She eats because she is hungry.)
You can use this for many ability levels. It works great with students using Spanish for You! It is simple, yet challenging.