Your newborn navigates the world using his five senses. Baby's sensory explorations are constant, whether he's mesmerized by Daddy's face (or his brightly patterned tie) or soothed by the sound of his favorite lullaby or the smell of Mommy's skin. Keep things interesting by exposing baby to lots of new sensations — tickle him with a feather or play your favorite CD. The possibilities are endless when there's a whole world to discover.
Newborns prefer the human face in general. They're especially drawn to the outline of the face or the hairline, which is easy to see because of the contrast. Newborns can distinguish light from dark but can't quite see color until about 4 months. Try getting baby's attention with high-contrast patterns (like a checkerboard or stripes) and black-and-white or boldly colored toys. At 4 months he'll begin to use his eyes to coordinate his hand movements, making reaching and grabbing easier.