Is there a store in Tokyo that sells gadgets, electronic or otherwise, that could impress North Americans? I am aware of Akihabara (no gadgets but lots of electronics) and Tokyu Hands, but I am wondering if there is something else that I should know about. The reason I am asking is that I want to buy some unique gifts to take back home and impress young kids (11 to 15 years old) in my family who have almost everything available in North America.
Thanks in advance.