This is an activity that works better in pre-intermediate to advanced classes, but you could also try it with beginners, once you cover the vocabulary about feelings.

Tell your students to think about what they’ll answer if you ask them how they are. Tell them to be original, you don’t want everybody to say “bien”.

Ask them to stand up, and explain to them that you’re going to say different adjectives and, that when you say the one they were thinking of, they must sit down.

Then, say as many adjectives and expressions as you can imagine to answer a “¿Cómo estás? question. Something like “bien, mal, muy bien, muy mal, regular, así así, cansado, aburrido, feliz, alegre, contento, enfadado, enojado, enfermo, estresado, etc.”

Stop when all your students are seated, or when you run out of ideas. If that is the case, ask the ones who are still standing the word they were thinking about.

This is an easy way to start the class differently, and you might get some ideas from it to continue the activity with further questions (i.e. if half of the class sat down after you said “cansado”, you might want to ask them why).

You can repeat the activity another day, asking for a volunteer to say the adjectives instead of you.