We had labs of iMacs and if anything happened to a machine, kids would (more often than not) just yank the power cord. Occasionally this would foobar the machine entirely and create unnecessary work. We couldn't catch the culprits.

So, if the machine managed to boot up successfully, after an unexpected power loss, we would take a photo using the built in camera and send it along with a ticket to the job queue, as well as do a complete re-image of the machine (automatically).

The number of funny photos we collected of kids just starting at the computer with WTF looks on their faces. But - from these photos we at least had the opportunity to educate the individuals about how to look after the computers a bit better.