My favorite, after trying all the store-bought ones, is a stainless-steel teaspoon, controlled with gentle taps with my forefinger. I can very easily dribble a single kernel of any powder out of it.
I dump a nearly-there charge out of the powder measure, then bring it up to the desired weight with that handy teaspoon � several kernels if I have to, then a single kernel at a time at the last.
