Man, what a pain to find this thread again!
Okay! This thought came to me while playing with a little bit of trim making some dry sift in my trim bin before I trim up a girl and put her in the freezer. So I'm sitting there shaking this stuff almost like vibrating it.
And then the 70s came back in a flash!
I don't even know if this device still exists.
In high school I was an apprentice printer. I operated a offset printing press and did all sorts of printing. There was one device that I used every single day and it was called a jogger. After printing something, you either had to put it back in the press for another color or package your product up. This means you would take a ream of paper, 500 sheets, and put them on this jogger to get all the papers lined up. All it was was a large flat top that vibrated. You loosely held it together Inlet the table do most of the work.
If I had one of those today I would probably do a bit more dry shift! It would be absolutely perfect for this purpose! I haven't even looked online if anything exists like that to this day.
Maybe by chance someone might get to use this for that purpose. I think it would knock it out of the park
Edit................... I bet this would work!
Amazon product