1. Do something with paper to make it stand.
2. Make four more of them, doing different.
3. Choose the "best" one from the five that you just made.
4. Make it better.
5. Look at your last model and think of ways to improve it further.
Here are some additional pictures taken from my class. This exercise allows students to think about the entire design process — problem definition, generation alternatives, evaluation, and refinement — in a very short period of time. After this exercise, everyone becomes a designer. This exercise is not only effective but also fun. You can see students smiling.