This is Squeakles right now - sitting on his daddy's lap, entranced by some simple black and white patterns.
From the beginning, Squeakles has been fascinated by the ceiling in our living room, which has long dark (faux wood) beams with embedded ceiling lights in between them. When we carry him around the living room he cranes his neck back so that he can stare at the ceiling. Seeing how much he enjoys these simple high contrast patterns, J found Squeakles the display patterns in the picture above and I found him the mobile below.
He also makes real eye contact now. (In the second picture below, I was standing on a chair, which is why they're both looking up.)
He's also starting to make cute coo noises, but we're still working on uploading videos so you'll have to wait to see that cuteness later.