Maggie, I have tons of materials that could help you in your ESL class (a great idea, by the way. I hope they pay you well though!) . You can come over anytime and peruse my ESL library. I taught a lot of business writing for ESL learners, so that might interest some of your colleagues.

I always found in my classes that the most obvious topics yielded the best responses. Business people don't like to feel they're being babied or "coached" in conversation. However, there are some fun games that always get things going. One of them is the **We're all in a lifeboat and have to throw one person overboard to save resources. Each person tells us why she should be kept on board** game.