The sieves aren't horribly expensive but the shakers are and it's totally impractical to shake manually. I've given thought to picking up a used paper shaker and see if it could be adapted. The paper shakers will take a ream of paper and shake it until the corners and edges all in a nice neat stack. At the SCAA conference I attended in 2008 the guy from Modern Process Equipment did a good session on grind particle distribution and its relationship to drip coffee quality and characteristics. It was very enlightening and if you are SCAA member should probably still be available from them as a download.
New York Central Coffee Roasters