[ToySub1946]

Never leave anything visible in car.
(Nothing to be seen from outside, anytime car is parked.)

Under Driver's Seat:
Large plastic bottle of mouthwash.
Plastic spray bottle of window cleaner.
One small white terry cloth (cotton) towel.

Console:
Contigo brand 16oz coffee mug.
other items depending on day trip.
Phone.

Glove Box:
small flashlight.
tire gauge.
Garmin and all of it's wiring.
Adapter for sd card and wiring for music.
various sd cards in sandwich bag.
Tic Tac candy..large size..for boredom.
Real Live paper maps...especially local city map.
magnifying glass.
cigarette lighter.
hand compass.
Napkins.
plastic spoon, fork, knife or just one item of these.

Trunk:
Large box of facial tissue.
roll of toilet tissue, rubber band around it.
zip lock sandwich bag of quarters for car wash.
Many more white terry rags. (Harbor Freight)
Burger King coupons.
Other fast food coupons.
Childrens scissors to cut coupons.
Ice Scraper.
reusable grocery bags.
antacid pills, other personal toiletrie items, meds as needed.
4-way universal lug wrench.
4 gauge jumper cables.
Owner's manual for vehicle with registration and insurance cards within.
Large clear, thin, people sized plastic bags (to cover seats if any person is very wet or muddy clothes).
canteen of water.
One new plastic tarp for emergencies.
Spare coats, gloves, hats, blanket, depending on anticipated weather.
Small knife...whatever is legal within your area. Jack Knife maybe.
Within spare tire area: small hand tools. Illicit items one chooses.

I have no use for an arm rest...my arms and hands are always at work in the car.