We bought a Harbor Freight “Jiggle Cleaner” and some plastic media a couple of weeks ago to try to clean up some recycled nuts, bolts, washers and brackets.  We’re having a lot of fun with it!  We do a batch of hardware, then fish the parts out with a big magnet and dump them in a plastic box for sorting and storage.

We came up with this photo that we are having made into a 20″ x 30″ custom jigsaw puzzle.  Should be quite maddening.