i am a field tech that runs warranty calls, and i feel the same way.
1) 1000' box of Cat5
2) Networking Toolbag (toner, tester, splitter, punchdown tool, bags of plugs, ghetto butt-set, etc)
3) open box with cheapo precision screwdrivers, imaging CDs, some fluids for the car, business cards, spare modems for 4 different ISPs
4) open boxes of random sizes/shapes from warranty calls that have no return airbill
-shoes
-half empty tub of cheetos?
-spare new keyboards (both usb and ps/2)
-spare mice
-spare tire? (rimshot!)
-stroller
-backpack
-box o' rags from autoparts store
right now there's a fishing tackle box with spare resistors and diodes but i just keep it in for the voltmeter...which i fished out and took back into the house...why the hell am i keeping it in there?
-spare workshirt
-umbrella
-hats (both Indy500 ones)
etc
etc...