Micro or nano?
I think of micros as being about the size of a 35mm film container, and nanos as the sort of size that screw-up name holders for dog collars are.
I've got a plastic container that I'll be using soon, and it's between the two. I'm not sure how to describe it, and I'd be interested to hear people's opinions.
It's a cylindrical plastic container with a screw top, and measures about 1.8 inches (4.5 cm) tall and 0.7 inches (1.8 cm) in diameter.
Do not go gentle into that good night.
Rage, rage against the dying of the light. (Dylan Thomas)