As a freelancing software developer I worked in many teams. Every team had a different penalty to punish the developer, who broke the build. There have been commit rankings or blame boards. You know, these little inter-developer competitions. And usually there was a little money bank to put in an euro.
Back in the days I took the money from the money bank, put the same amount of my private money on top and donated it to a local charity organization. Nowadays, there is a better way to donate money: betterplace.org
Please do me a favor and tell everybody who's using a continuous integration system, that this is the place to send people who break the build!