Get a suggestion from the class. A nice broad theme.
Someone steps forwards and says "I ❤️ ..." and then talks about that thing (inspired by the suggestion).
Then everyone does an "I love ..." based on the last monologue.
You can repeat the exercise and see if "a theme" emerges. This is good for Harold training.
This is a very simple exercise designed to get people into the idea of doing monologues.
If they're beginners, keep the I LOVE statements short so no one gets freaked the hell out.