never have i found any weapons/guns, most commonly I find toys stuffed back there,
have found underwear....
have found plenty of cash, a cd changer wrapped up and stuffed in the spare tire well once
, lots of cameras, camcorders (one with rather "interesting adult content on it
), PDAs, phones, lighters, pens, meds, cds, dead bugs, a mouse, lots of seseme/sunflower seeds, books, mail, golf balls, tees, and once a whole un-touched whopper
.