K.M.
Everyone I told this to loves it. At present openining time have the kids sit in a circle holding the gift they brought. The birthday child will not be holding a gift at this time. Start playing music and have the kids start passing the gifts around the circle. When the music stops the birthday child opens the gift they are holding at that time. Keep going until all the presents are gone. You may have a couple of cheapy gifts on hand in case there are siblings that brought only one gift. That way they each get to hold one starting out. This game will provide the opportunity for the child to say thank you in a calm manner and give an adult the time to write down who gave which gift for thank you notes.