Blended monkey pickles (leave the skins on) will make your slush box shift like new (for a while) and make your car smell like a Dairy Queen when the tranny gets hot too.
Egg whites in the radiator seals leaks and sawdust in the differentials cure bad gears too.... For a while at least.
His batteries are toast, burnt toast. Time to replace and put the epsom salts back in the medicine cabinet.
A spud in the tailpipe works wonders. It seals the exhaust and your motor won't start (gasoline engine). Pulled that trick a few times when I was a kid, on people I didn't like. Shoved the spud way up the tailpipe with a broom handle.