O-Miyage

Source: http://www.timeout.jp/en/tokyo/feature/68/Tokyos-best-souvenirs

This is the Best place to get cool souvenirs.
Oriental Bazaar Probably the best-known gift shop in Tokyo, this is a useful one-stop outlet for almost everything: dolls, china, kimonos, yukata, woodblock prints, furniture, antiques and books on Japan. Ideal for stocking up on presents and souvenirs in one easy trip, but it can be a little kitschy. Prices are generally moderate, and staff speak good English. Address: 5-9-13 Jingumae, Shibuya-ku Telephone: (03)33400-3933 Other locations: No.1 Terminal Building 4F, Narita Airport (04)7632-9333

Here is what you could get:

Yukata 1500-2000 yen and about $80-$100 in US

Dolls US dollar: Can range from $50-$3000 (when rare)

Kimonos US: $100-$300