"Low Tech Hacking"
At times, I've been known to rage against "authority" figures and rules, generally minor stuff like speeding, etc. Somewhat related, I enjoy discovering or hearing/reading of others discovering ways of defeating high-tech devices, particularly when the means of defeat is a notably low tech method.
Not to rant too much, but speed/stop light cameras serve only to produce revenue for the city/county/state entitity, they don't save lives in any fashion. I've always been curious about means of defeating the cameras, with super-reflective license plate spray or similar. This one is certainly high on my list of cleverly low tech: