Hi.. Light-hearted question..My DSD is turning 18 in March and I've spotted a cool looking antique bottle opener on eBay that I thought would be a nice birthday present (she likes unusual things). One reason being she can put it in her Uni box when she moves as she will most certainly be drinking; and two, it's a 'traditional' key given to an 18 year old. My DH is arguing that you only give a key to a 21yr old; I had a key given to me on both birthdays..that wasn't odd was it?