Well I cleaned my truck as I am getting 2-12's and an amp installed here right away and here's what I found - Let's see: Towel, coveralls, jack that I can't use, winter front, bumper cover, multimeter, 400w d/c-a/c converter, fan belt, seat cover, beer, vodka, pepsi, butter ripple, a couple granola bars, something that maybe used to be a sandwich at one time, safety glasses, sunglasses, riding goggles, a toque, gloves both leather and winter, socks (clean!), 3 cell phone chargers, GPS DC power supply, maps, a couple Diesel Power mags, 2 flashlights, my ES hat that has been mising for 3 months, and a #2 phillips screw driver.
And yes this was ALL neatly tucked under and behind the back seat-but mostly under!!