This is the place to go to buy Cosplay outfits! There’s s store called M’s near the train station where if you pose for a photo you get 30% off. Sounds a bit sleazy but after looking at the girls on the wall it’s actually rather innocent (well, as innocent as a 4 storey “adult convenience” store can be).
The stores with anime and manga merchandise are awesome! You can get life-size dolls from anime like Chobits. A friend of mine stumbled on a “doll brothel” where you can have sex with the dolls for money. Sigh. The many faces of Japan never cease to amaze me.
This is where you want to go for electronics (well duh). If you’re a full-on nerd, and someone in our party was (you’ll just want to keep coming back here and miss the rest of Tokyo!) Electronics are much cheaper in the little back shops than the big stores, and don’t be afraid to bargain, it’s expected. (Electronics seems to be the only shopping area in Japan where you can bargain. Other places will just refuse, or take a few cents off. Bleah…)