I wouldn't make a very good politician, but I do have two good ideas.
1. Anyone injuring themselves because they're utterly pissed should be presented with a bill when they leave A&E. Same if they're arrested for being dicks.
2. Dog-owners guilty of allowing their dogs to foul have to spend every weekend for a month going round to the houses of people who have stepped in dog shit and cleaning their shoes with a toothpick.