Fill a tub with small water filled rubber balls to the rim.<p>Put water until it starts overflowing.<p>Now dip any utensils in it and it'll come out clean. (Unless the contents have dried.)<p>How's that for semiautomatic dish washing?
Well ball size and ball rougness/bristleness degree come to mind.
Industry has used fluid carries cleaning agents, is sizes from sand to quite large.
I imagine it would work with a dishwasher that sieved out the balls and re-used them again.