Start with a finger and go on from there.
I am a fan of "punishment fits the deterrent" rather than the normal though of "punishment fits the crime." Fitting the punishment to the crime obviously is not working to deter the crime. If you were going to get a slap on the wrist, it's not much of a deterrent. But if your body was going to end at the wrist if you did said crime, you might think before doing so.