Dr. Harris-Ray:
The use of hypothetical situations and case studies are good examples of methods to pique student's attention.
Back up plans are lessons, activities, or a game plan that is introduced when, for whatever reason, the planned lesson or activity is interrupted. I think about the worst case scenario that could interfere with my daily plan, and then build a fool proof activity that I know I can depend on. Examples you stated above are a good foundation.
Regards, Barry