Similar age (a bit older) but I always remember our core group of friends' parents would pass around a key-collection plate — "this is a safe environment to have a little bit of fun in" — the only time I ever remember a drunk peer driving home... he was then banned from all future private party invites. Sadly/predictably, he would later perish in a DUI, early 20s...

Damn, I miss the late 90s/aughts. Damn, I'm old (and fat, too; I "made it", somehow!)