We were talking about Kohlberg and morality and one of my students asked me about "trolley" problems. That was my inspiration!
If you are not aware of "trolley problems" they go something like this...
"A trolley has lost its brakes and is headed down a track and will kill 5 people. You can flip the switch and only one person will be killed. What do you do?"
Of course there are a million variations of these kinds of problems too.
While not strictly psychology I think these problems are interesting and that my students might have fun with them.
Here are a couple versions of trolley problems. The students survey their peers and graph the data.