Divide the room in half. It might help to put a strip of tape down the middle. Each person gets a straw. Each side gets a bunch of Q-Tips. If you can get different colors for each team, that would be the best. Otherwise just visually judge at the end. The task is to get as many of your Q-Tips to the other side in the allotted time. When time is up, see who has the most Q-Tips on their side. The only problem is that Q-Tips continually fly during the rest of the evening, which can cause distractions during the message.