I was out with my friend and she fancied a guy standing at the bar with his friend, so as he was wearing glasses and to get the two of them talking, I went up to him and said excuse me, but you should have gone to Specsavers . . .
I can't remember what he said initially but it did get them talking to each other.
Another time I was walking along the road with my friend and a car pulled alongside us and the guy driving waved an A to Z at us and started saying, do you know where blah blah road is? when I looked at the A to Z it wasn't even open on the area where we were, and he said oh sorry, I just wanted to ask you for your number. Quite original I thought and got me talking to him!