Coming up with new exercises is a challenge for so many improv teachers. (Well, unless you always teach the same. But that is not me) This is why I started this section.
However, over the years I learned: keep it simple.
Your warmup game does not need 17 different rules. You can just play tag.
Your scene work does not need complex setups. Start with an inspiring suggestion (I never get bored of ‘a location’) and just play.
Especially when you teach something new, it actually helps…