The temple area (Asakusa?) has a huge outdoor market area. When I was there the first time, I got the girls komonos, and picked up a bunch of other neat stuff (lighters, ash tray, decorative fan).

I need to ask my travel buddy about shrines - there are some amazing ones.

If you get a chance, take a ride on the Shinkansen (bullet train). It is so different from any other train ride you've ever been on. (warning, rocket scientist speak ahead) The aerodynamics of the train are unbelievable. When you go through tunnels, the pressure actually causes your ears to pop. Really cool