The first thing that comes to my mind is observation games. They could include:

-spot the difference in the pictures
-Kim's Game (a Scout game where you lay out a tray of small objects, let the players observe for a minute, and then cover up the tray. The players have to try to name/wirte down as many of the objects as they can remember
-optical illusion pictures (i.e. The faces/vase picture, pictures made up of other smaller pictures)
-search and find games (hide objects and have the players find them, or use a picture with pictures of ojects within it)

Love Clue and Mastermind! Battleship? Connect 4?