We eat with our chopsticks two, sometimes three times a day. Having a pair that you really love to eat with makes each meal all the more fun. There are so many factors to consider when selecting chopsticks. The size of your hands will determine the length. The tips can be fine or thick. The chopsticks can be round or beveled. The material can range from a simple bamboo to several layers of lacquer that are polished away to show off the colorful layers.
One of my favorite shops is Ginza Natsuno as the selection may be the greatest in Tokyo. Another shop worth checking out is Hashichō in the new Nihonbashi Coredo Building #3. It is a sister shop to Natsuno. Here you will find not only chopsticks, but also hashioki (chopstick rests) and other tableware items.
Chuo-ku, Nihonbashi-Muromachi 1-5-5, Coredo Muromachi Bldg. 3, 2nd floor
There is also a shop in Roppongi at Midtown (Roppongi 9-7-4) in the Galleria 3rd floor.