I made something that was simple to make so if I ran out I could replenish it quickly or easily (for my DH). I had punch and coffee for drinks and I put out a meat and cheese tray. I did offer a Valentine gift basket as a door prize and had people sign up. I just printed out slips for their name, address, phone, and email. That way they get a chance to win the basket and I get another way to add people to my mailing list.