Jeanine, We want to plan for the worst, so plans need to be low-tech (not requiring anything electrical or computerized). Activities that can done with minimal preparation, and implemented quickly are good too. Finally, topics related to the subject matter must be a part of it. Among things I think work well are small group discussions, share-pair, student-led class presentation, course review, reading assignments with a written summary assignment, and competition-like games (i.e. Jeopardy-style) that require students to challenge each other with course material. Just a few thoughts to get you thinking what would work best for you. Barry Westling