Nanobrushes:

The brushes can be used for sweeping up nano-dust, painting microstructures and even cleaning up pollutants in water.

The bristles' secret is carbon nanotubes, tiny straw-like molecules just 30 billionths of a metre across.

This is pretty cool, but it remain irritating that the prefix "nano" has come to mean the scale of the objects themselves, rather than the scale at which they are built. That's why Eric Drexler had to abandon "nanotechnology" and come up with the phrase "molecular manufacturing" to represent his concepts for precise placement of atoms in building objects both small and large.

[Via Geek Press]

Do they get sold door-to-door by little tiny Fuller Brush nanosalesmen?

Used for painting The Last Supper on the head of a pin.

Nanobrushes to sweep the nanodust off my nanopants.