Does the child name the picture?
What else does she do with the pictures?
Have several sets of cards for different categories of things--toys, animals, vehicles, babies, etc.
Make a picture-to-object matching game. See if the child can bring the picture card to the matching real object in the room.
Do this with individual photos of all the children and adults involved in your program that the child might have contact with. Parents too!
Affix the pictures to metal juice can lids instead of cards. They make a great noise when dumped.
This might just be a dump-and-fill exercise for a younger toddler. It might turn into a vocabulary stretcher as the child learns labels and descriptive words for familiar objects. It can be asocial exercise if an adult enjoys looking at the cards with the child.