Take your que from Tavern on the Green and hang paper lanterns from the trees, or from the ceiling in clusters. Two or three hung low over a table would look just smashing, and at $6.50 - $12.50 a piece, you can afford to hang a bunch. These are available at Pearl River Mart on Broadway in Soho, or on their website. They come in a variety of interesting shapes, colors and sizes, don't be afraid to mix them up!