What activites you can do in Tokyo?

Answer 1

You could go to Tokyo tower, try Sushi - the national cuisine, visit Disney Land Tokyo, see the Tokyo Drift, ride on the Shinkansen - bullet train (while you're on the bullet train, you can see Mount Fuji), you could try on the Kimonos and traditional dresses or you could visit the temples and educate yourself on the History of Japan.

Have a look at some holiday brochures/websites.

I lived there but I didn't do much sight seeing so I only know a few.