Bic Camera
There is a huge, six-floor Bic Camera electronics store in front of JR Yurakucho Station, selling everything from household appliances to contact lenses. There is even a small movie theater on the 7th and 8th floors showing lesser-known Japanese and foreign films. Perhaps a good place for a one-stop shop if you are not able to spend time exploring the streets of Akihabara.
Some other shopping areas include:
A recent revamping of the Marunouchi business district has resulted in some high-end boutiques such as Tiffany's, Gaultier, Sergio Rossi etc. lining the street from the Marunouchi building to Yurakucho, but there is a feeling that it's not quite "there" yet, compared to the repertoires of the Ginza or Omotesando shopping districts.