Originally Posted by
hailstorm
I'm being deliberately obtuse just to wind you up.
Back to the subject of what to do with one day in Tokyo with a baby...I guess we would really need to know more about what kind of things the OP likes to do. Some other ideas off the top of my head...
* A leisurely time in Meiji Shrine, letting the little one run around in the park, followed by Harajuku shopping
* Stay in Odaiba (Hotel Nikko? Le Meriden?) and take boat cruise to Asakusa
* Stay at Grand Hyatt Tokyo, enjoy Über chic of Roppongi Hills complex
I'm with Hailstorm on this. I'd suggest a walk in either Meiji Shrine or Shinjuku Gyoen. Grand Hyatt is a good choice but I'm surprised Hail is suggesting Roppongi

. You might think about a nice hotel that has babysitting service. That would allow you and your wife to go out for a nice dinner or some shopping.