I think this printable I Spy cards from Martha Stewart are such a fun idea for a wedding, or any special event if you typed up your own cards.
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.