Show us your home made tools

Not really a homemade tool, but an alternate use for a tool shooter use. When I used to work on Jeeps, 90% of the bolts were rusted or just plain nasty. We kept a brass vibrating tumbler (for cleaning brass ammunition casings when reloading) around loaded with sand. drop your bolts in there for a couple hours, when you pull em out, no more grease or rust.