I've listed them in the instructor's manual for each book. An example of these exercises is the forced relationship approach, where they are given a subject unrelated to a problem and are forced to draw some relationships. Students are given the following objects to force them to think about relationships, that might lead to solutions they would not have considered without such an approach. They work with the person sitting next to them in all these exercises, then share the results with the rest of the class. Teams of 5 are the next most productive, so I use that size for the team projects.
Interesting anecdotes help set the tone for the class.
I include several each class period. An example is the use of bird feathers to mop up marine oil spills. One person did. Michael Murphy, a lecturer in chemistry at a college in Ireland, showed that feathers absorb 14 times their weight in oil. Peat, the next best natural material, absorbs less than twice its weight.