NANO-NANO is a small robot keychain thingy designed by Koichi Miyajima. They are created out of small electrical parts and cost $18.50 each.

“Playing a leading role today in supporting high-tech society, artist Koichi Miyajima created the humorous and nostalgic figure of a human-like robot. Ironically made from the anonymous inorganic parts found in standard electronic goods, he shaped them to suit the city dwellers of the electronic age. The phone strap robots called NANONANO have various models and occupation and each fits into a part of urban life. A bus driver, a biker, a musician, a machine operator…”

Aren't they cute? Kinda want to make something like this now :)