I also found this on marthastewarts magazine. Here is the cute details:
Keep your littlest guests occupied with this photographic scavenger hunt. Who knows? One of them might even snap your favorite shot of the night.
Place a card, a disposable camera, and a pencil at each child's setting, and see which kid can photograph all the items on the list first. You won't need an incentive to get the kids playing, but a small prize for the winner is a good idea.
Download the PDF and print onto card stock. With a paper trimmer or a craft knife and metal straightedge, cut the paper in half to make two cards. Use a rounded corner punch to trim the corners of each card.