I have an acquaintance who's organising some social events for professional singles. A bunch of unconnected people will meet up for dinner at a restaurant, talk and exchange details if they're interested in meeting up again. She's asked if I have any ideas for making the event doesn't end up with a number of shy people nursing their drink in the corner, too nervous to mix successfully. She suggested having a quiz competition as an ice-breaker but I have my doubts about that working. So, any ideas?