OK, Here is a consolidated list of what has been suggested so far:
Tools (e.g., sockets for the water heater, torque wrench for the wheels, etc.)
Spare parts (fuses, etc.).
Electrical tape
Duct Tape
Masking Tape
Various size wire end twists (for connecting two wires together, and inline splices, assortment of fuses
12 volt lamps
Bolts (shear) and nuts for the landing pad and slide out
Tooth picks and glue for the cabinet screws
Extra cabinet screws
4' section of PIC (PVC?) pipe
PVC Glue
2 straight couplings and 2 elbow connectors for the pipe
Extra hot water heater anode
Extra connectors for the water filter
Extra connectors for the white and green hose
Extra hose end washers
Jar of misc screws bolts and nails for inside
12 self taping screws for the outside/compartments/frame
Sheet of little round felt stick-ons
Extra rope for tying down the awning or what ever
Extra satellite/TV cable
Male to male connectors for satellite/TV cable
Mouse traps
Steel wool for filling holes
Trucker flares
Flare holder
3 collapsible reflectors
150 psi, 2-gallon compressor for filling tires, with a brad nailer for making trim repairs
3 different 12 volt bulbs
120 volt bulbs
3 different types of fuses, not just differing amps, but different types
4 amp glass fuse for Fantastic Fan
The fuse panel uses small bladed fuse of various sizes
Mini bladed 30 amp for the landing gear
one-gallon shop vac to suction up overflows and liquid spills
Small vinyl repair kit for a tear or wear in the awning
Eternabond Tape
Duct tape
Some kind of epoxy
Spare connector plug for my electric service cable
Fenco product designed for emergency repairs
http://www.fernco.com/PRW.asp
12V DC and 120 VAC air compressor
12 ton hydraulic jack with 2x6's cut about 18 inches long to handle any tire issues
4-way tire tool to get the lug nuts off
Square bit for handling the screws in the Monty
Cordless electric drill.
The best jumper cables you can get with heavy copper and long
Spare slide shear pins and
Spare shear pins for the front landing leg drive motor
Gorilla tape
ATF for the slide hydraulics
Two 5Th's of good 150 Rum
Assorted tools, in my case small hand tools
Correct size sockets for the hot water tank anode and wheel lugs
1 set of wheel bearings
Brake magnet wheel bearing grease
EZ-Jack
Folding Ladder
Hand saw for trimming tree limbs
Small hand saw for repair jobs
Electric Ties
Spare filled 5 gal fuel container
And Most Important of ALL!!!
Visa card with a large credit limit
Two 5Th's of good 150 Rum or your favorite adult beverage
Ozz's cell phone