M.D.
I like Michelle S. idea of a book exchange. You could even expand on that idea and ask each person to bring a gift no more than $5. for the birthday present exchange. Make it clear that the $5. gift being brought will not be for the birthday child but instead for another child at the party. Then you can play a game like "Hot Potato" at the end of the party and have each child bring the gift they brought to the circle, then as the music plays each child passes the gifts to the left. When the music stops, everyone open the gift in their lap. All the kids are happy because they get to open a present and no goodie bags for you, because they take home the gift they opened. Just a thought.