I don't do it often, but sometimes I find out a person's tastes in books or suggest books that I can lend them which gives us more to talk about it. I'm not unknown to buy people books too, depending on how close we are.
Books, music (I can spend hours getting the song suggestion absolutely spot on) and bad jokes.
I take the mick too. Not unusual but it’s a pretty surefire way of knowing when I’m attracted to you