I don't recall where I heard this, if it was a serious suggestion or a comedian, but the idea was simple. When a person reaches legal drinking age they get a drinking card allowing them to drink and buy alcohol. Not use their driver's license.

Do something illegal that involves alcohol, lose your drinking license for x years to forever. Get caught selling/serving alcohol to someone without a card, that's a 'crime' now.

Additionally, since you are not removing their driver's license as punishment, they can still do things like go to work, take care of kids/family and so on. they just can't drink legally. Obviously lots of issues and ideas, but that is the basic idea.