More coordination, please...

25% of class is out tonight due to "family emergency" or other non-descriptive reasons. I'm a pretty hard ass about emailing me ahead of time. I plan activities, etc. It's not just for my own personal amusement. I actually did have a somwhat boring class prepped. PowerPoint and lecture for the first half, case study for the second half. I'm now wondering how I can reward the troops that will show up tonight. Class is in an hour...must think....