A very nice client has invited me and a couple of other contractors to his organisation's Christmas lunch. It's in a nice restaurant. I don't want to go in with one arm as long as the other, but I don't want to make a big deal about bringing something either. Any ideas? He will be the only person I know there (his colleague is a new recruit I've met once, and one of the other contractors I know vaguely through a social connection). I was thinking of maybe getting some fancy Christmas crackers?