RE: Stuffing Things in a Westy
Okay, I'll play
Jumper Cables-In the open space under the rear cabinet by the rear hatch
Umbrella-Like the door idea, seen others do that, have to see if the one I
carry will fit
Plastic Grocery Bags-Stuff between the outside wall and the seat/bed cussion
on the right side.  They go down into that space between the rear seat box
end and the outside wall.  Reach in and get one when needed, stuff empties
there after buying groceries.  Use as garbage bags.
Spare Fuel Can-In the Bagawest carrier up top, fully enclosed.
Storage in the space inboard and under the slider-I've seen this used
before, various setups.  The best I've seen is a steel box welded in place
with a trap door for access from the inside.
Other
Most of my 'spares' are kept in the Secret Compartment, out of the way but
there when needed.