Those of you who tumble or vibrate your brass.

[SB]

I have a purpose built wire mesh screen in a wooden frame I throw them in and swirl them around with a broom. I prop one side up with a piece of 4x4 and the angle really helps shake it loose.

This be sure get a media separator or build one. It makes it a whole lot easier.
You can use a colander (just not the wife's), but it takes a long time and you wind up having to shake them out individually anyway.