Wow, nanotech is here at an affordable price, well affordable is a matter of opinion.

http://i2.ytimg.com/vi/mEH6tDLKcVU/mqdefault.jpg

Depends on what you would classify as nanotech but the use of nanomaterials in all kinds of household goods including personal care products is quite widespread already.

We have been using nanaotech since the Roman empire: we just didn't know it at the time

 

http://en.wikipedia.org/wiki/Cranberry_glass

Why is cranberry glass nano tech?

Because nanotech is what we call technology that depends on things built on a nanometre scale and the gold particles in red glass are sub micron.

http://en.wikipedia.org/wiki/Colloidal_gold